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JavaScript - Dynamic Dropdown Menus
Hi there, im new to the forum and currently in the process of building a website.
Unfortunetly it needs a little javascript putting in and I dont know any javascript atall. So heres my problem: -------------------- I want 3 drop down menus where you change the top option, the middle menu updates (from a sql database), you change the middle option then the bottom option updates (again from the database). you select the 3rd option. it searches a database for the item matching all 3 entrys it displays the price all without reloading the page then you add the item to cart. ------------ Heres my site with fake data in the dropdowns: http://xeon.donov.co.uk/~blinky/?a=cat_sub&cid=3&f=A3 Similar TutorialsHello, I REALLY like the dropdown menus that are on the Patagonia website. How difficult would this be to replicate? Is there a write-up or tutorial somewhere I can read and learn how to do this? Any help would be greatly appreciated, Thanks Here is the link: http://www.patagonia.com/web/us/home hi, I am making a driving map which shows lines on the map based on point of departure and destination. It's working fine he http://www.xelawho.com/map/drive2.htm but what I would like to do is instead of having all the sidebar checkbox business, just to have two dropdown boxes - one for "from" and one for "to". I have seen plenty of these around but my problem is that my data comes from an xml file, so I guess the menus would have to be populated by loops. The other problem being that not every departure point goes to every destination, so the second menu would have to be populated dynamically depending on the option chosen in the first... does anybody have any ideas how I would do this? thanks in advance. Hi, I am trying to use JavaScript for several linked drop down menus. The contents of the first drop down menu is defined in the code of the form, however, I do not know the best way to populate the following drop down menus depending on the selection of the previous. I have something working with the following JavaScript code, however as there are lots of options I am not sure whether this is the best way of doing this. Code: <script type="text/javascript">
function setYear(chosen, selbox) {
selbox.options.length = 0;
if (chosen == " ") {
selbox.options[selbox.options.length] = new Option('Please select a year',' ');
setTimeout(setYear(' ',document.question.subject),5);
}
if (chosen == "1") {
selbox.options[selbox.options.length] = new
Option('exam1','11');
selbox.options[selbox.options.length] = new
Option('exam2','12');
selbox.options[selbox.options.length] = new
Option('exam3','13');
selbox.options[selbox.options.length] = new
Option('exam4','14');
selbox.options[selbox.options.length] = new
Option('exam5','15');
setTimeout(setYear('11',document.question.subject),5);
}
if (chosen == "2") {
selbox.options[selbox.options.length] = new
Option('exam6','twoone');
selbox.options[selbox.options.length] = new
Option('exam7','twotwo');
selbox.options[selbox.options.length] = new
Option('exam8','twothree');
selbox.options[selbox.options.length] = new
Option('exam8','twofour');
selbox.options[selbox.options.length] = new
Option('exam9','twofive');
selbox.options[selbox.options.length] = new
}
if (chosen == "3") {
selbox.options[selbox.options.length] = new
Option('exam10','threeone');
selbox.options[selbox.options.length] = new
Option('exam11','threetwo');
selbox.options[selbox.options.length] = new
Option('exam12','threethree');
selbox.options[selbox.options.length] = new
}
if (chosen == "11") {
selbox.options[selbox.options.length] = new
Option('subject1','111');
}
}
</script>
This is what I have in the form: Code:
<td>Minimum DBS Year: </td><td colspan="2">
<select name="DBSyear" onchange="setYear(document.question.DBSyear.options
[document.question.DBSyear.selectedIndex].value,
document.question.exam);">
<option value=" " selected="selected"> </option>
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
</select>
</tr>
<tr>
<td>
Exam Paper:
</td>
<td>
<select name="exam" onchange="setYear(document.question.exam.options
[document.question.exam.selectedIndex].value,
document.question.subject);">
<option value=" " selected="selected">Please select a year</option>
</select>
</td>
</tr>
<tr>
<td>
Subject:
</td>
<td>
<select name="subject" size="1">
<option value=" " selected="selected">Please select an exam</option>
</select>
</td>
</tr>
How would I populate the drop down menus from tables in the database and filter the options depending on the previous drop down selection?? I would appreciate any help! Is there such a thing as a dropdown menu that works in all browsers? (or at least all the commonly used ones)... Is JavaScript a good way to go? and if yes, are there any precoded templates available that are fairly straightforward to integrate and adapt for dropdowns?
i want to validate against the dropdown fields below name usrchoices which repeat depends upon the data records from database...so if there is 5 questions retrieved from the database then the 5 dropdowns appears with name usrchoices, i don't know how to validate all these fields...so please any one here fix the following code and send me....Thanks a Million <script language="JavaScript"><!-- function validating(validate) { **if (form.usrchoices.selectedIndex == 0) { ****alert('Please select all Questions'); ****document.getElementById("validate").reset(); * ****return false; **} **return true; } //--></script> <form action="submitsurvey.asp" method="post" name="validate" id="validate" onSubmit="return validating()"> <% Do while Recordset_questions.EOF %> ****<select name="usrchoices" id="usrchoices"> **********<option value="" selected>Select Choices</option> **********<option value="Y">Yes</option> **********<option value="N">No</option> **********<option value="IDK">I Dont know</option> ********</select> <%Loop%> </form> Hi, i am building a website form which I would like the user to select a product of interest. Some products are three tiered and some are two tiered. 1. Example of three tier (3 dropdowns required only): Scooters (dropdown 1) Three Wheel Scooters (dropdown 2) Delux 503S Bird Scooter (dropdown 3) 2. Example of two tier (2 dropdowns required only): Standing Bikes (dropdown 1) Children 300 Series (dropdown 2) If the user wants to submit their interest for one of the products, I need to have at most 3 dropdown menus. So in Example 1, I would have 3 dropdowns in my form. Dropdown 1: Scooters Dropdown 2: Three Wheel Scooters Dropdown 3: Delux 503S Bird Scooter In Example 2, I would only need to use the first 2 dropdown menus. (Obviously the first dropdown would contain 'Scooters' and 'Standing Bikes' in the menu list) The below code is perfect except, I would like to alter the code so that the second and third dropdowns are hidden until a selection from the first drop down is made. Once for example, 'Standing Bikes' is selected from the first dropdown menu, the second dropdown menu appears and the third remains hidden due to the fact that it is not required. If I selected Scooters from the first dropdown menu, the second dropdown would appear listing all items associated with this and at this point the third dropdown menu is hidden. If i select 'Three Wheel Scooter' from the second dropdown the third dropdown menu now appears listing all Three wheel Scooters such as 'Delux 503S Bird Scooter'. I hope this makes sense. Let me know if you require clarrification. Here is the code: Code: <script language="JavaScript" type="text/javascript">
<!--
/*
*** Multiple dynamic combo boxes
*** by Mirko Elviro, 9 Mar 2005
*** Script featured and available on JavaScript Kit (http://www.javascriptkit.com)
***
***Please do not remove this comment
*/
// This script supports an unlimited number of linked combo boxed
// Their id must be "combo_0", "combo_1", "combo_2" etc.
// Here you have to put the data that will fill the combo boxes
// ie. data_2_1 will be the first option in the second combo box
// when the first combo box has the second option selected
// first combo box
data_1 = new Option("1", "$");
data_2 = new Option("2", "$$");
// second combo box
data_1_1 = new Option("11", "-");
data_1_2 = new Option("12", "-");
data_2_1 = new Option("21", "--");
data_2_2 = new Option("22", "--");
data_2_3 = new Option("23", "--");
data_2_4 = new Option("24", "--");
data_2_5 = new Option("25", "--");
// third combo box
data_1_1_1 = new Option("111", "*");
data_1_1_2 = new Option("112", "*");
data_1_1_3 = new Option("113", "*");
data_1_2_1 = new Option("121", "*");
data_1_2_2 = new Option("122", "*");
data_1_2_3 = new Option("123", "*");
data_1_2_4 = new Option("124", "*");
data_2_1_1 = new Option("211", "**");
data_2_1_2 = new Option("212", "**");
data_2_2_1 = new Option("221", "**");
data_2_2_2 = new Option("222", "**");
data_2_3_1 = new Option("231", "***");
data_2_3_2 = new Option("232", "***");
// fourth combo box
data_2_2_1_1 = new Option("2211","%")
data_2_2_1_2 = new Option("2212","%%")
// other parameters
displaywhenempty=""
valuewhenempty=-1
displaywhennotempty="-select-"
valuewhennotempty=0
function change(currentbox) {
numb = currentbox.id.split("_");
currentbox = numb[1];
i=parseInt(currentbox)+1
// I empty all combo boxes following the current one
while ((eval("typeof(document.getElementById(\"combo_"+i+"\"))!='undefined'")) &&
(document.getElementById("combo_"+i)!=null)) {
son = document.getElementById("combo_"+i);
// I empty all options except the first one (it isn't allowed)
for (m=son.options.length-1;m>0;m--) son.options[m]=null;
// I reset the first option
son.options[0]=new Option(displaywhenempty,valuewhenempty)
i=i+1
}
// now I create the string with the "base" name ("stringa"), ie. "data_1_0"
// to which I'll add _0,_1,_2,_3 etc to obtain the name of the combo box to fill
stringa='data'
i=0
while ((eval("typeof(document.getElementById(\"combo_"+i+"\"))!='undefined'")) &&
(document.getElementById("combo_"+i)!=null)) {
eval("stringa=stringa+'_'+document.getElementById(\"combo_"+i+"\").selectedIndex")
if (i==currentbox) break;
i=i+1
}
// filling the "son" combo (if exists)
following=parseInt(currentbox)+1
if ((eval("typeof(document.getElementById(\"combo_"+following+"\"))!='undefined'")) &&
(document.getElementById("combo_"+following)!=null)) {
son = document.getElementById("combo_"+following);
stringa=stringa+"_"
i=0
while ((eval("typeof("+stringa+i+")!='undefined'")) || (i==0)) {
// if there are no options, I empty the first option of the "son" combo
// otherwise I put "-select-" in it
if ((i==0) && eval("typeof("+stringa+"0)=='undefined'"))
if (eval("typeof("+stringa+"1)=='undefined'"))
eval("son.options[0]=new Option(displaywhenempty,valuewhenempty)")
else
eval("son.options[0]=new Option(displaywhennotempty,valuewhennotempty)")
else
eval("son.options["+i+"]=new Option("+stringa+i+".text,"+stringa+i+".value)")
i=i+1
}
//son.focus()
i=1
combostatus=''
cstatus=stringa.split("_")
while (cstatus[i]!=null) {
combostatus=combostatus+cstatus[i]
i=i+1
}
return combostatus;
}
}
//-->
</script>
<form>
<select name="combo0" id="combo_0" onChange="change(this);" style="width:200px;">
<option value="value1">-select-</option>
<option value="value2">1</option>
<option value="value3">2</option>
</select>
<BR><BR>
<select name="combo1" id="combo_1" onChange="change(this)" style="width:200px;">
<option value="value1"> </option>
</select>
<BR><BR>
<select name="combo2" id="combo_2" onChange="change(this);" style="width:200px;">
<option value="value1"> </option>
</select>
<BR><BR>
<select name="combo3" id="combo_3" onChange="change(this);" style="width:200px;">
<option value="value1"> </option>
</select>
</form>
<p align="center">This free script provided by<br />
<a href="http://javascriptkit.com">JavaScript
Kit</a></p>
Howdy, So I have some javascript/html on one file (another.html) that I would like to split into two separate pages: home2.html cars.js If you view the code for home2.html everything works up until the model form box. That's where my problem lies. I can get the code to work on another.html but I'm splitting it up incorrectly in home2.html Help would be much appreciated. PS: If you are going to gripe at me for not using PHP or SQL to make things easier (for future updates to code) at least link me to something to learn from then insult me. another.html Code: <html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script language="javascript" type="text/javascript">
function dropdownlist(list)
{
document.formname.subcategory.options.length=0;
switch (list)
{
case "bmw":
document.formname.subcategory.options[0]=new Option("Select Model","");
document.formname.subcategory.options[1]=new Option("3 Series");
document.formname.subcategory.options[2]=new Option("5 Series");
document.formname.subcategory.options[3]=new Option("Z Series");
break;
case "buick":
document.formname.subcategory.options[0]=new Option("Select Model","");
document.formname.subcategory.options[1]=new Option("Century");
document.formname.subcategory.options[2]=new Option("Lesabre");
document.formname.subcategory.options[3]=new Option("Park Avenue");
document.formname.subcategory.options[4]=new Option("Regal");
document.formname.subcategory.options[5]=new Option("Riveria");
break;
case "cadillac":
document.formname.subcategory.options[0]=new Option("Select Model","");
document.formname.subcategory.options[1]=new Option("Catera");
document.formname.subcategory.options[2]=new Option("Deville");
document.formname.subcategory.options[3]=new Option("El Dorado");
document.formname.subcategory.options[4]=new Option("Seville");
break
case "chevrolet":
document.formname.subcategory.options[0]=new Option("Select Model","");
document.formname.subcategory.options[1]=new Option("Astro");
document.formname.subcategory.options[2]=new Option("Blazer S 10");
document.formname.subcategory.options[3]=new Option("Camaro");
document.formname.subcategory.options[4]=new Option("Corvette");
document.formname.subcategory.options[5]=new Option("G2500");
document.formname.subcategory.options[6]=new Option("Lumina");
document.formname.subcategory.options[7]=new Option("Malibu");
document.formname.subcategory.options[8]=new Option("Monte Carlo");
document.formname.subcategory.options[9]=new Option("Suburban");
document.formname.subcategory.options[10]=new Option("Tahoe");
document.formname.subcategory.options[11]=new Option("Ventur");
break
case "chrysler":
document.formname.subcategory.options[0]=new Option("Select Model","");
document.formname.subcategory.options[1]=new Option("Town & Country");
document.formname.subcategory.options[2]=new Option("Cirrus");
document.formname.subcategory.options[3]=new Option("Concord");
document.formname.subcategory.options[4]=new Option("Sebring");
break;
case "dodge-plymouth":
document.formname.subcategory.options[0]=new Option("Select Model","");
document.formname.subcategory.options[1]=new Option("Avenger");
document.formname.subcategory.options[2]=new Option("Breeze");
document.formname.subcategory.options[3]=new Option("Caravan Voyager");
document.formname.subcategory.options[4]=new Option("Durango");
document.formname.subcategory.options[5]=new Option("Intrepeid");
document.formname.subcategory.options[6]=new Option("Ram Van 1500");
document.formname.subcategory.options[7]=new Option("Ram Van 2500");
case "ford":
document.formname.subcategory.options[0]=new Option("Select Model","");
document.formname.subcategory.options[1]=new Option("Contour");
document.formname.subcategory.options[2]=new Option("Crown Victoria");
document.formname.subcategory.options[3]=new Option("E150");
document.formname.subcategory.options[4]=new Option("E250");
document.formname.subcategory.options[5]=new Option("E350");
document.formname.subcategory.options[6]=new Option("Escort");
document.formname.subcategory.options[7]=new Option("Expedition");
document.formname.subcategory.options[8]=new Option("Explorer");
document.formname.subcategory.options[9]=new Option("Freestar");
document.formname.subcategory.options[10]=new Option("Mustang");
document.formname.subcategory.options[11]=new Option("Taurus");
document.formname.subcategory.options[12]=new Option("Windstar");
break;
case "gmc":
document.formname.subcategory.options[0]=new Option("Select Model","");
document.formname.subcategory.options[1]=new Option("Jimmy S 15");
break;
case "honda":
document.formname.subcategory.options[0]=new Option("Select Model","");
document.formname.subcategory.options[1]=new Option("Accord");
document.formname.subcategory.options[2]=new Option("Civic");
document.formname.subcategory.options[3]=new Option("Passport");
break;
case "isuzu":
document.formname.subcategory.options[0]=new Option("Select Model","");
document.formname.subcategory.options[1]=new Option("Odyssey");
document.formname.subcategory.options[2]=new Option("Rodeo");
break;
case "jeep":
document.formname.subcategory.options[0]=new Option("Select Model","");
document.formname.subcategory.options[1]=new Option("Cherokee");
document.formname.subcategory.options[2]=new Option("Grand Cherokee");
document.formname.subcategory.options[3]=new Option("Wrangler");
break;
case "lincoln":
document.formname.subcategory.options[0]=new Option("Select Model","");
document.formname.subcategory.options[1]=new Option("Continental");
document.formname.subcategory.options[2]=new Option("Navigator");
document.formname.subcategory.options[3]=new Option("Stratus");
document.formname.subcategory.options[4]=new Option("Town Car");
break;
case "mercedez":
document.formname.subcategory.options[0]=new Option("Select Model","");
document.formname.subcategory.options[1]=new Option("M Class ML");
case "mercury":
document.formname.subcategory.options[0]=new Option("Select Model","");
document.formname.subcategory.options[1]=new Option("Cougar");
document.formname.subcategory.options[2]=new Option("Grand Marquis");
document.formname.subcategory.options[3]=new Option("Mountaineer");
document.formname.subcategory.options[4]=new Option("Mystique");
document.formname.subcategory.options[5]=new Option("Sable");
document.formname.subcategory.options[6]=new Option("Villager");
break;
case "mitsubishi":
document.formname.subcategory.options[0]=new Option("Select Model","");
document.formname.subcategory.options[1]=new Option("Eclipse");
document.formname.subcategory.options[2]=new Option("Galant");
break;
case "nissan":
document.formname.subcategory.options[0]=new Option("Select Model","");
document.formname.subcategory.options[1]=new Option("200 SX");
document.formname.subcategory.options[2]=new Option("Altima");
document.formname.subcategory.options[3]=new Option("Maxima");
document.formname.subcategory.options[4]=new Option("Quest");
document.formname.subcategory.options[5]=new Option("Sentra");
case "oldsmobile":
document.formname.subcategory.options[0]=new Option("Select Model","");
document.formname.subcategory.options[1]=new Option("Alero");
document.formname.subcategory.options[2]=new Option("Blazer");
document.formname.subcategory.options[3]=new Option("Cutlass");
document.formname.subcategory.options[4]=new Option("Eighty Eight");
document.formname.subcategory.options[5]=new Option("Silhouette");
break;
case "pontiac":
document.formname.subcategory.options[0]=new Option("Select Model","");
document.formname.subcategory.options[1]=new Option("Boneville");
document.formname.subcategory.options[2]=new Option("Firebird");
document.formname.subcategory.options[3]=new Option("Grand AM");
document.formname.subcategory.options[4]=new Option("Grand Prix");
document.formname.subcategory.options[5]=new Option("Sun Fire");
document.formname.subcategory.options[6]=new Option("Transport");
break;
case "saturn":
document.formname.subcategory.options[0]=new Option("Select Model","");
document.formname.subcategory.options[1]=new Option("Saturn");
break;
case "toyota":
document.formname.subcategory.options[0]=new Option("Select Model","");
document.formname.subcategory.options[1]=new Option("4 Runner");
document.formname.subcategory.options[2]=new Option("Avalon");
document.formname.subcategory.options[3]=new Option("Camry");
document.formname.subcategory.options[4]=new Option("Corolla");
document.formname.subcategory.options[5]=new Option("Solara");
break;
case "volkswagen":
document.formname.subcategory.options[0]=new Option("Select Model","");
document.formname.subcategory.options[1]=new Option("Jetta");
document.formname.subcategory.options[2]=new Option("New Bettle");
document.formname.subcategory.options[3]=new Option("New Golf");
document.formname.subcategory.options[4]=new Option("New Jetta");
document.formname.subcategory.options[5]=new Option("Passat");
break;
}
return true;
}
</script>
</head>
<title>Dynamic Drop Down List</title>
<body>
<form id="formname" name="formname" method="post" action="submitform.asp" >
<table>
<tr>
<td>Make:</td>
<td><select name="category" id="category" onchange="javascript: dropdownlist(this.options[this.selectedIndex].value);">
<option value="">Select Make</option>
<option value="bmw">BMW</option>
<option value="buick">Buick</option>
<option value="cadillac">Cadillac</option>
<option value="chevrolet">Chevrolet</option>
<option value="chryler">Chrysler</option>
<option value="dodge-plymouth">Dodge-Plymouth</option>
<option value="ford">Ford</option>
<option value="gmc">GMC</option>
<option value="honda">Honda</option>
<option value="isuzu">Isuzu</option>
<option value="lincoln">Lincoln</option>
<option value="mercedez">Mercedez</option>
<option value="mercury">Mercury</option>
<option value="mitsubishi">Mitsubishi</option>
<option value="nissan">Nissan</option>
<option value="oldsmobile">Oldsmobile</option>
<option value="pontiac">Pontiac</option>
<option value="saturn">Saturn</option>
<option value="toyota">Toyota</option>
<option value="volkswagen">Volkswagen</option>
</select></td>
</tr>
<tr>
<td align="right" valign="middle">Model:
</td>
<td align="left" valign="middle"><script type="text/javascript" language="JavaScript">
document.write('<select name="subcategory"><option value="">Select Sub-Category</option></select>')
</script>
<noscript><select name="subcategory" id="subcategory" >
<option value="">Select Model</option>
</select>
</noscript></td>
</tr>
</table>
</form>
</body>
</html>
home2.html Code: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">
<head>
<link href="index.css" rel="stylesheet" type="text/css">
<script type="text/javascript" src="cars.js"></script>
</head>
<body>
<div id="wrapperLeft">
<div id="wrapperRight">
<div id="main">
<div id="columnLeft">
<div id="center"><h3></h3></div>
</div>
<div id="columnRight">
<div id="center"><h3></h3>
</div>
</div>
<div id="columnCenter">
<div id="center">
<form id="carinfo" name="carinfo" method="post"> <!--action="?"-->
<fieldset><legend>Legalization of Autmoibles</legend>
<table>
<tbody>
<tr>
<td>First Name:</td><td><input type="text" name="firstname" maxlength="30"></td>
</tr>
<tr>
<td>Last Name:</td><td><input type="text" name="lastname" maxlength="30"></td>
</tr>
<tr>
<td>Number:</td><td><input type="text" name="number" maxlength="20"></td>
</tr>
<tr>
<td>Email:</td><td><input type="text" name="email" maxlength="35"></td>
</tr>
<tr>
<td>City:</td><td><input type="text" name="city" maxlength="30"></td>
</tr>
<tr>
<td>State:</td><td><select name="state" size="1">
<option selected value=""></option>
<option value="AL">Alabama</option>
<option value="AK">Alaska</option>
<option value="AZ">Arizona</option>
<option value="AR">Arkansas</option>
<option value="CA">California</option>
<option value="CO">Colorado</option>
<option value="CT">Connecticut</option>
<option value="DE">Delaware</option>
<option value="FL">Florida</option>
<option value="GA">Georgia</option>
<option value="HI">Hawaii</option>
<option value="ID">Idaho</option>
<option value="IL">Illinois</option>
<option value="IN">Indiana</option>
<option value="IA">Iowa</option>
<option value="KS">Kansas</option>
<option value="KY">Kentucky</option>
<option value="LA">Louisiana</option>
<option value="ME">Maine</option>
<option value="MD">Maryland</option>
<option value="MA">Massachusetts</option>
<option value="MI">Michigan</option>
<option value="MN">Minnesota</option>
<option value="MS">Mississippi</option>
<option value="MO">Missouri</option>
<option value="MT">Montana</option>
<option value="NE">Nebraska</option>
<option value="NV">Nevada</option>
<option value="NH">New Hampshire</option>
<option value="NJ">New Jersey</option>
<option value="NM">New Mexico</option>
<option value="NY">New York</option>
<option value="NC">North Carolina</option>
<option value="ND">North Dakota</option>
<option value="OH">Ohio</option>
<option value="OK">Oklahoma</option>
<option value="OR">Oregon</option>
<option value="PA">Pennsylvania</option>
<option value="RI">Rhode Island</option>
<option value="SC">South Carolina</option>
<option value="SD">South Dakota</option>
<option value="TN">Tennessee</option>
<option value="TX">Texas</option>
<option value="UT">Utah</option>
<option value="VT">Vermont</option>
<option value="VA">Virginia</option>
<option value="WA">Washington</option>
<option value="WV">West Virginia</option>
<option value="WI">Wisconsin</option>
<option value="WY">Wyoming</option>
</select></td>
</tr>
<tr><td>Do you have the following:</td></tr>
<tr><td><input type="checkbox" name="mandatory" value="license" /></td><td>Driver's License</td></tr>
<tr><td><input type="checkbox" name="mandatory" value="title" /></td><td>Vehicle Title</td></tr>
<tr><td><input type="checkbox" name="mandatory" value="receipt" /></td><td>Utility Receipt from Mexico showing recieving address</td></tr>
<tr><td><input type="submit" value="Submit" /></td></tr>
<tr><td>Make</td>
<td>
<select name="category" id="category" onchange="javascript: dropdownlist(this.options[this.selectedIndex].value);">
<option value="">Select Make</option>
<option value="bmw">BMW</option>
<option value="buick">Buick</option>
<option value="cadillac">Cadillac</option>
<option value="chevrolet">Chevrolet</option>
<option value="chryler">Chrysler</option>
<option value="dodge-plymouth">Dodge-Plymouth</option>
<option value="ford">Ford</option>
<option value="gmc">GMC</option>
<option value="honda">Honda</option>
<option value="isuzu">Isuzu</option>
<option value="lincoln">Lincoln</option>
<option value="mercedez">Mercedez</option>
<option value="mercury">Mercury</option>
<option value="mitsubishi">Mitsubishi</option>
<option value="nissan">Nissan</option>
<option value="oldsmobile">Oldsmobile</option>
<option value="pontiac">Pontiac</option>
<option value="saturn">Saturn</option>
<option value="toyota">Toyota</option>
<option value="volkswagen">Volkswagen</option>
</select>
</td>
</tr>
<tr>
<td>Model:</td>
<td>
<script type="text/javascript" language="JavaScript">
document.write('<select name="subcategory"><option value="">Select Sub-Category</option></select>')
</script></td>
</fieldset>
</form>
</tbody>
</table>
</div>
</div>
</div>
</div>
</div>
<div class="footer">
</div>
</body>
</html>
--cars.js contained in next post-- Hi, im looking for some help figuring out how to achieve the following: i have an ecommerce site. on a product a customer can select attributes associated with that product (i.e colour, size, shape etc.). Each attriute is represented by a HTML select, containing the values allowed for that product. the problem comes when certain colours do not come in certain sizes. Say my product has the following: colours: red, yellow, blue size: small, medium, large shape: square, circle but there is no stock for red,medium and red,large. I need to dynamically remove medium + large when red is selected so they cannot be chosen from the select. This could apply for any combination of attributes. Also this is completely dynamic so there could be 2 attributes or 10 attributes, and changing one would need to cascade down the selects. i have posted the code at the bottom of the post. The js representation of what is selectable is an object, containing other objects, each object representing a variation and wether to show or not. i know this is a right mouthful to try and explain, its even hard to figure out how to do it! an example of what im trying to achieve is: http://www.bit-cart.com/online-store-front-live-demo/products/Mikes-Test-Product.html. I do have jquery available on my page if it helps. any ideas would be most appreciated! thanks mike HTML: Code: <select name='attribute_12' id='attribute_12' class='attribute-select'>
<option value='166'>attribute_12 166</option>
<option value='165'>attribute_12 165</option>
<option value='171'>attribute_12 171</option>
</select>
<select name='attribute_10' id='attribute_10' class='attribute-select'>
<option value='108'>attribute_10 108</option>
<option value='110'>attribute_10 110</option>
<option value='120'>attribute_10 120</option>
<option value='148'>attribute_10 148</option>
</select>
<select name='attribute_19' id='attribute_19' class='attribute-select'>
<option value='201'>attribute_19 201</option>
<option value='202'>attribute_19 202</option>
<option value='203'>attribute_19 203</option>
</select>
JS: Code: <script type="application/javascript">
var variants = {
"304" : {"attrs":[171,108,201], "show":0},
"305" : {"attrs":[171,108,202], "show":1},
"306" : {"attrs":[171,108,203], "show":0},
"307" : {"attrs":[171,120,201], "show":1},
"308" : {"attrs":[171,120,202], "show":0},
"309" : {"attrs":[171,120,203], "show":1},
"310" : {"attrs":[171,148,201], "show":0},
"311" : {"attrs":[171,148,202], "show":1},
"312" : {"attrs":[171,148,203], "show":0},
"313" : {"attrs":[171,110,201], "show":1},
"314" : {"attrs":[171,110,202], "show":0},
"315" : {"attrs":[171,110,203], "show":1},
"316" : {"attrs":[166,108,201], "show":0},
"317" : {"attrs":[166,108,202], "show":1},
"318" : {"attrs":[166,108,203], "show":0},
"319" : {"attrs":[166,120,201], "show":1},
"320" : {"attrs":[166,120,202], "show":0},
"321" : {"attrs":[166,120,203], "show":1},
"322" : {"attrs":[166,148,201], "show":0},
"323" : {"attrs":[166,148,202], "show":1},
"324" : {"attrs":[166,148,203], "show":0},
"325" : {"attrs":[166,110,201], "show":1},
"326" : {"attrs":[166,110,202], "show":0},
"327" : {"attrs":[166,110,203], "show":1},
"328" : {"attrs":[165,108,201], "show":0},
"329" : {"attrs":[165,108,202], "show":1},
"330" : {"attrs":[165,108,203], "show":0},
"331" : {"attrs":[165,120,201], "show":1},
"332" : {"attrs":[165,120,202], "show":0},
"333" : {"attrs":[165,120,203], "show":1},
"334" : {"attrs":[165,148,201], "show":0},
"335" : {"attrs":[165,148,202], "show":1},
"336" : {"attrs":[165,148,203], "show":0},
"337" : {"attrs":[165,110,201], "show":1},
"338" : {"attrs":[165,110,202], "show":0},
"339" : {"attrs":[165,110,203], "show":1}
}
</script>
I have been searching everywhere and have found a few of articles available regarding dropdown menu.. couldnt get exactly what i wanted.. i am not really good at javascript, or even programing..am trying my best. anyway~ Here is what i want. something simple if there is more than 1 data entity (count>1) (Case 1), then execute 'select(drop down)' else (count <=1)(Case 2), then just show the data entity itself. (i dun even want the dropdown box to appear) as below screenshot or the attachment I have a script getting me the dropdown menu as below, i wanna modify this but not sure where to start... -------------------------------- <div id="abcdefg"> <form id="setLanguage" action="{$request_uri}" method="post"> <select name="selectlanguage" id="selectlanguage" onchange="setLanguage(this.value)"> {foreach from=$languages key=k item=language name="languages"} <option value="{$language.id_lang}" {if $language.iso_code == $lang_iso} selected {/if} >{$language.name} </option> {/foreach} </select> <input type="hidden" name="id_lang" id="id_lang" value=""/> </form> </div> -------------------------------- Really appreciate your help with modifying this. Please try not to give me a totally new script (i bet it will/may work better but i wouldnt be able to understand..:-( so no point...) Hi I have two drop down menus I want the first one has name of the folders and when change the other dropdown has names of the sub-folders of this folder i have the top folders at the first dropdown how can i have the subfolders at the second when change first? the problem is how to open folder if i have folders aaaaa has subfolders(1111,2222,2233) bbbbb has subfolders(3333,4422,2433) ccccc has subfolders(1131,2232,2532) and each folder has subfolders how can i have name of these subfolders when change the topfolders(aaaaa, bbbbb, ccccc) I have more than 1000 top folders and eachone have 10 subfolders already i have all topfolders at first dropdown ,i want to have subfolders at second automatic , any help?? hi Peers, i am having issue capturing the value of the selected DDL using IE. the code below works just fine in Firefox... // Create a new drop down list -- for text box use 'input' instead of 'select' var newDDL = document.createElement('select'); // size lenght of the DDL for both IE or Firefox newDDL.setAttribute("style","width:300px"); //firefox newDDL.setAttribute("width","300px"); newDDL.style.width = "300px"; newDDL.id = 'id' + elementid + ColumnElement; newDDL.setAttribute('name','newDDL'+ elementid+ColumnElement); // filling the DDL by ITEM array Elements var i=0; for (i=0;i<=rec_count;i++) { objOption = document.createElement('option') objOption.text = ITEM[i] newDDL.options.add(objOption) } counter++; newDDL.onchange = show1; both cases are giving the value selected in firefox function 1: function show1() { alert('id=' + this.getAttribute('id') + 'name = ' + this.getAttribute('name') + 'value=' + this.value ); } function 2: function show1() { alert('id=' + this.getAttribute('id') + 'name = ' + this.getAttribute('name') + 'value='+ this.getAttribute('value')); } any suggestion will be appreciated thanks Hey, Were I am stuck is with the jquery I have a form that is done in a form class and when an option is selected from the dynamically populated drop down menu I would like it to fill in the text boxes so they can be edited. I currently have: getfeed.php - the page that is connected to the javascript Code: <?php
include('class/class.form.php');
include('class/class.users.php');
$iID = trim($_GET['extension']);
if(!$iID) die('No User Data found.');
$getValues = new Extension();
$user_info = $getValues->getUsersInformation($iID);
$sip_info = $getValues->getSipInformation($iID);
//print_r($user_info);
//print_r($sip_info);
$array = $getValues->getUsersInformation($iID);
echo '<br /><br />-- end of query --';
The Javascript Code:
if(document.id('LoadExtension') && document.id('ExtensionResponse')) { // id of select box
var sel = document.id('LoadExtension'); // ser select box as var.
sel.addEvent('change', function(chg) { // add change event to select box.
if(sel.getSelected().get('value') != '') { // on change if selected value is not empty.
new Request.HTML({
url : 'http://Domain.co.nz/Air/includes/getFeed.php?extension='+ sel.getSelected().get('value'),
onRequest: function() {
document.id('ExtensionResponse').set('html', 'loading...');
},
onComplete: function(r1, r2, html, js) {
document.id('ExtensionResponse').set('html', html);
}
}).send();
}
});
}
At the moment it does not load any data(I somehow need to get the $iID sent from the index.php but the drop down menu is a count array would I take it from this?) and is in a separate div below the form. Javascript novice here looking to create a dynamic dropdown based on date. It's a list of preset prices that will change each month to reflect a pro-rated system. Any thoughts/examples on how I would go about setting this up using javascript would be much appreciated. Thanks. Here's what I need: In September, the dropdown will display these prices Code: <option value="100">Product 1</option> <option value="150">Product 2</option> <option value="200">Product 3</option> In October, the dropdown will display these prices <option value="50">Product 1</option> <option value="100">Product 2</option> <option value="150">Product 3</option> Ok so i am trying to make 3 dropdowns based off a mysql table. and the 3 dropdowns need to be based off of the previous dropdown. i.e Source, School, Sub. Select Source, and the schools in dropdown 2 are based off of the source they selected, and when they select a school, all the sub cats for that school are in the sub category dropdown. It seems like a simple concept, but i've google'd EVERYWHERE and notihng. I have the 3 dropdown's pulling from my database perfectly. i just cannot base the next dropdown on the previous selection! I know nothing of javascript..im a front end designer with little php/mysql. I've read that Ajax is the way to go, so here i am ! any tutotials, links or sample script layouts i can use would be amazing! Thank you! jt hello, i am writing a script that will update a dropdown list based on the selection of a previous list. the script is run by a PHP script, so instead of posting the PHP, i will post an example client-side script. the hierachy is: category, sub category, brand (but sometimes there exists no sub category and the PHP script queries and adds brands instead) everything works correctly, except for one major issue: you can not change the selection of the third (brand) box this could be an easy fix for some coders, but i am not experienced in javascript and could really use some help. here is an example script, sorry it is so long Code: <script language="javascript">
function fillprodCat(){
// this function is used to fill the category list on load
addOption(document.prodCatSubCatBrand_list.add_prodCat, "1", "HD Video");
addOption(document.prodCatSubCatBrand_list.add_prodCat, "2", "Components");
addOption(document.prodCatSubCatBrand_list.add_prodCat, "3", "Audiophiles");
addOption(document.prodCatSubCatBrand_list.add_prodCat, "4", "Speakers");
addOption(document.prodCatSubCatBrand_list.add_prodCat, "5", "Whole House Audio");
addOption(document.prodCatSubCatBrand_list.add_prodCat, "6", "Furniture");
addOption(document.prodCatSubCatBrand_list.add_prodCat, "7", "Accessories");
}
function SelectprodSubCat(){
// on selection of category, this is called
removeAllOptions(document.prodCatSubCatBrand_list.add_prodSubCat);
if(document.prodCatSubCatBrand_list.add_prodCat.value == "1"){
document.prodCatSubCatBrand_list.add_prodSubCat.disabled=false;
addOption(document.prodCatSubCatBrand_list.add_prodSubCat,"1", "HD Television");
addOption(document.prodCatSubCatBrand_list.add_prodSubCat,"2", "HD Projectors");
addOption(document.prodCatSubCatBrand_list.add_prodSubCat,"3", "Screens");
}
if(document.prodCatSubCatBrand_list.add_prodCat.value == "2"){
document.prodCatSubCatBrand_list.add_prodSubCat.disabled=false;
addOption(document.prodCatSubCatBrand_list.add_prodSubCat,"4", "Turntables");
addOption(document.prodCatSubCatBrand_list.add_prodSubCat,"5", "Receivers, amps & preamps");
addOption(document.prodCatSubCatBrand_list.add_prodSubCat,"6", "DVD & CD players");
}
if(document.prodCatSubCatBrand_list.add_prodCat.value == "3"){
document.prodCatSubCatBrand_list.add_prodSubCat.disabled=true;
addOption(document.prodCatSubCatBrand_list.add_prodSubCat,"0", "None");
}
if(document.prodCatSubCatBrand_list.add_prodCat.value == "4"){
document.prodCatSubCatBrand_list.add_prodSubCat.disabled=true;
addOption(document.prodCatSubCatBrand_list.add_prodSubCat,"0", "None");
}
if(document.prodCatSubCatBrand_list.add_prodCat.value == "5"){
document.prodCatSubCatBrand_list.add_prodSubCat.disabled=true;
addOption(document.prodCatSubCatBrand_list.add_prodSubCat,"0", "None");
}
if(document.prodCatSubCatBrand_list.add_prodCat.value == "6"){
document.prodCatSubCatBrand_list.add_prodSubCat.disabled=false;
addOption(document.prodCatSubCatBrand_list.add_prodSubCat,"8", "AV Furniture");
addOption(document.prodCatSubCatBrand_list.add_prodSubCat,"7", "Armchairs");
}
if(document.prodCatSubCatBrand_list.add_prodCat.value == "7"){
document.prodCatSubCatBrand_list.add_prodSubCat.disabled=false;
addOption(document.prodCatSubCatBrand_list.add_prodSubCat,"10", "Power Conditioning");
addOption(document.prodCatSubCatBrand_list.add_prodSubCat,"9", "Remote Controls");
addOption(document.prodCatSubCatBrand_list.add_prodSubCat,"11", "Mounts");
addOption(document.prodCatSubCatBrand_list.add_prodSubCat,"12", "Cables & Interconnects");
}
}
function SelectprodBrand(){
// ON selection of category, sub category, or brand this is called
removeAllOptions(document.prodCatSubCatBrand_list.add_prodBrand);
if(document.prodCatSubCatBrand_list.add_prodCat.value == "1"){
if(document.prodCatSubCatBrand_list.add_prodSubCat.value == "1"){
document.prodCatSubCatBrand_list.add_prodBrand.disabled=false;
addOption(document.prodCatSubCatBrand_list.add_prodBrand,"1", "Hitachi");
addOption(document.prodCatSubCatBrand_list.add_prodBrand,"2", "JVC");
addOption(document.prodCatSubCatBrand_list.add_prodBrand,"3", "Panasonic");
addOption(document.prodCatSubCatBrand_list.add_prodBrand,"4", "Pioneer");
addOption(document.prodCatSubCatBrand_list.add_prodBrand,"5", "Samsung");
addOption(document.prodCatSubCatBrand_list.add_prodBrand,"6", "Sharp");
}
if(document.prodCatSubCatBrand_list.add_prodSubCat.value == "2"){
document.prodCatSubCatBrand_list.add_prodBrand.disabled=false;
addOption(document.prodCatSubCatBrand_list.add_prodBrand,"7", "Epson");
addOption(document.prodCatSubCatBrand_list.add_prodBrand,"8", "JVC");
}
if(document.prodCatSubCatBrand_list.add_prodSubCat.value == "3"){
document.prodCatSubCatBrand_list.add_prodBrand.disabled=false;
addOption(document.prodCatSubCatBrand_list.add_prodBrand,"9", "Da-Lite");
}
}
if(document.prodCatSubCatBrand_list.add_prodCat.value == "2"){
if(document.prodCatSubCatBrand_list.add_prodSubCat.value == "4"){
document.prodCatSubCatBrand_list.add_prodBrand.disabled=false;
addOption(document.prodCatSubCatBrand_list.add_prodBrand,"10", "Music Hall Audio");
}
if(document.prodCatSubCatBrand_list.add_prodSubCat.value == "5"){
document.prodCatSubCatBrand_list.add_prodBrand.disabled=false;
addOption(document.prodCatSubCatBrand_list.add_prodBrand,"11", "Arcam");
addOption(document.prodCatSubCatBrand_list.add_prodBrand,"12", "Bose");
addOption(document.prodCatSubCatBrand_list.add_prodBrand,"13", "Integra");
addOption(document.prodCatSubCatBrand_list.add_prodBrand,"14", "Krell");
addOption(document.prodCatSubCatBrand_list.add_prodBrand,"15", "Pioneer");
}
if(document.prodCatSubCatBrand_list.add_prodSubCat.value == "6"){
document.prodCatSubCatBrand_list.add_prodBrand.disabled=true;
addOption(document.prodCatSubCatBrand_list.add_prodBrand,"", "None");
}
}
if(document.prodCatSubCatBrand_list.add_prodCat.value == "3"){
if(document.prodCatSubCatBrand_list.add_prodSubCat.value == "0"){
document.prodCatSubCatBrand_list.add_prodBrand.disabled=true;
addOption(document.prodCatSubCatBrand_list.add_prodBrand,"", "None");
}
}
if(document.prodCatSubCatBrand_list.add_prodCat.value == "4"){
if(document.prodCatSubCatBrand_list.add_prodSubCat.value == "0"){
document.prodCatSubCatBrand_list.add_prodBrand.disabled=false;
addOption(document.prodCatSubCatBrand_list.add_prodBrand,"16", "Canton");
addOption(document.prodCatSubCatBrand_list.add_prodBrand,"17", "Dali");
addOption(document.prodCatSubCatBrand_list.add_prodBrand,"18", "Tru Audio");
addOption(document.prodCatSubCatBrand_list.add_prodBrand,"19", "Von Schweikert");
}
}
if(document.prodCatSubCatBrand_list.add_prodCat.value == "5"){
if(document.prodCatSubCatBrand_list.add_prodSubCat.value == "0"){
document.prodCatSubCatBrand_list.add_prodBrand.disabled=false;
addOption(document.prodCatSubCatBrand_list.add_prodBrand,"20", "Elan");
}
}
if(document.prodCatSubCatBrand_list.add_prodCat.value == "6"){
if(document.prodCatSubCatBrand_list.add_prodSubCat.value == "8"){
document.prodCatSubCatBrand_list.add_prodBrand.disabled=false;
addOption(document.prodCatSubCatBrand_list.add_prodBrand,"21", "BDI");
addOption(document.prodCatSubCatBrand_list.add_prodBrand,"22", "Bello");
}
if(document.prodCatSubCatBrand_list.add_prodSubCat.value == "7"){
document.prodCatSubCatBrand_list.add_prodBrand.disabled=true;
addOption(document.prodCatSubCatBrand_list.add_prodBrand,"", "None");
}
}
if(document.prodCatSubCatBrand_list.add_prodCat.value == "7"){
if(document.prodCatSubCatBrand_list.add_prodSubCat.value == "10"){
document.prodCatSubCatBrand_list.add_prodBrand.disabled=false;
addOption(document.prodCatSubCatBrand_list.add_prodBrand,"23", "Richard Gray's Power Company");
}
if(document.prodCatSubCatBrand_list.add_prodSubCat.value == "9"){
document.prodCatSubCatBrand_list.add_prodBrand.disabled=true;
addOption(document.prodCatSubCatBrand_list.add_prodBrand,"", "None");
}
if(document.prodCatSubCatBrand_list.add_prodSubCat.value == "11"){
document.prodCatSubCatBrand_list.add_prodBrand.disabled=true;
addOption(document.prodCatSubCatBrand_list.add_prodBrand,"", "None");
}
if(document.prodCatSubCatBrand_list.add_prodSubCat.value == "12"){
document.prodCatSubCatBrand_list.add_prodBrand.disabled=false;
addOption(document.prodCatSubCatBrand_list.add_prodBrand,"24", "Analysis Plus");
addOption(document.prodCatSubCatBrand_list.add_prodBrand,"25", "Tributaries");
}
}
}
function removeAllOptions(selectbox)
{
var i;
for(i=selectbox.options.length-1;i>=0;i--)
{
//selectbox.options.remove(i);
selectbox.remove(i);
}
}
function addOption(selectbox, value, text )
{
var optn = document.createElement("OPTION");
optn.text = text;
optn.value = value;
selectbox.options.add(optn);
}
</script>
please let me know if this is too confusing to follow (because it certainly looks like it could be), and i will attempt to clean it up So i have a form with fields (30+), and about 5 of them are fields that need to pass into my dropdown (actually a dynmaic dropdown, select SOURCE, then whatever source u select it'll show options that are mysql source=$source), so it can go into my mysql query, and filter out the best results. (i.e date_of_birth, min_credits, state, etc). Needs to be done without submitting, hence javascript. Im echo'ing my query and its saying the variables i'm trying to pass are UNDEFINED. Am I not passing the vars correctly? do i need to prep the vars to "grab" them in the current field? this is what i have in my <head> Code: <script language="javascript" type="text/javascript">
function getXMLHTTP() { //fuction to return the xml http object
var xmlhttp=false;
try{
xmlhttp=new XMLHttpRequest();
}
catch(e) {
try{
xmlhttp= new ActiveXObject("Microsoft.XMLHTTP");
}
catch(e){
try{
xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
}
catch(e1){
xmlhttp=false;
}
}
}
return xmlhttp;
}
function getSchool(id,hs_grad_year,dob_day,dob_month,dob_year,min_credits,state) {
var strURL="findSchool.php?source="+id+"&hs_grad_year="+hs_grad_year+"&dob_day="+dob_day+"&dob_month="+dob_month+"&dob_year="+dob_year+"&min_credits="+min_credits+"&state="+state;
var req = getXMLHTTP();
if (req) {
req.onreadystatechange = function() {
if (req.readyState == 4) {
// only if "OK"
if (req.status == 200) {
document.getElementById('schooldiv').innerHTML=req.responseText;
} else {
alert("There was a problem while using XMLHTTP:\n" + req.statusText);
}
}
}
req.open("GET", strURL, true);
req.send(null);
}
}
function getSub(id,cid) {
var strURL="findSub.php?source="+id+"&cid="+cid;
var req = getXMLHTTP();
if (req) {
req.onreadystatechange = function() {
if (req.readyState == 4) {
// only if "OK"
if (req.status == 200) {
document.getElementById('subdiv').innerHTML=req.responseText;
} else {
alert("There was a problem while using XMLHTTP:\n" + req.statusText);
}
}
}
req.open("GET", strURL, true);
req.send(null);
}
}
</script>
The only var that is passing is SOURCE, and that's because its the name of the first dropdown I'm VERY new to javascript, do i need to set up like a GET method on my RECEIVING page? or can i just pass variables through? Do i need to get the "existing" data in the fields first? Thanks in advance, JT I am developing a messaging service between members of my site. I am developing this with asp.net mvc. When a user goes to the SendMessage view to send a message to another member, there is a dropdown list which presents the sender with all the members of the site, which he or she will pick as the recipient. However, i don't want it to be a dropdown, i want it to be a text box, where a user types in the first couple of letters of a name, and the dropdown appears then with only the members which have the same couple of letters. This is basically like every email system out there (facebook and gmail have it just like that). And after they chose one, they can select another one in the same textbox, just separated by a comma or something like that. Basically, how do i achieve that in javascript? I'm not even sure what that functionality is called, that's why i had to explain it properly. Any help is greatly appreciated. thank you Hi, I'm trying to integrate an address finder (http://www.craftyclicks.co.uk/) into my shopping cart (OsCommerce). I can get it to work but I need to add my own functionality. I'm not very experienced with JavaScript and my head has entered an infinite loop by now. The problem is that the address finder script can change the selected country in a drop-down list depending on the postcode entered by the user (using the onblur event handler). What I need it to do is to remove all other countries depending on the postcode. I can get it to remove all other countries but how do i return to the original list of countries when the postcode is changed again? Once all other counties are removed, the drop-down list will obviously only have one option left... I guess the question is also how does a function remember what it has done before, when it is called again? I have written this short test script as it is easier to work with than the craftyclicks oscommerce contribution: Code: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>HTML Template</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<meta name="description" content="" />
<meta name="keywords" content="" />
<script type="text/javascript">
//<![CDATA[
function store(element) {
// store values
var cl = element;
var text_list = new Array();
var value_list = new Array();
var length = cl.length;
for (var foo=0; foo<length; foo++) {
text_list[foo] = cl.options[foo].text;
value_list[foo] = cl.options[foo].value;
alert("text array " + foo + " " + text_list[foo]);
alert("value array " + foo + " " + value_list[foo]);
}
populate(cl, text_list, value_list);
}
function populate(element, text, value) {
// populate options with previously stored values
var cl = element;
var length = cl.length;
cl.options.length=0;
for (var bar=0; bar<length; bar++) {
cl.options[bar]= new Option(text[bar], value[bar], false, false);
}
}
function crafty_set_country(code) {
var cl = document.getElementById('select');
store(cl);
for (var i=0; i<cl.length; i++) {
if (cl.options[i].value == code) {
alert(cl.options[i].value + " found");
var value = cl.options[i].value;
var text = cl.options[i].text;
cl.options.length=0;
cl.options[0]=new Option(text, value, true, true);
/*
for (var j=0; j<cl.length; j++) {
alert("second loop " + cl.options[j].text);
if (cl.options[i].value != code) {
cl.options[j]
}
}
*/
} else {
alert(cl.options[i].value);
}
}
}
//]]>
</script>
</head>
<body>
<form>
<select id="select">
<option value="10">ten</option>
<option value="20">twenty</option>
<option value="30">thirty</option>
<option value="40">fourty</option>
<option value="50">fifty</option>
<option value="60">sixty</option>
</select>
<input type="button" value="remove" name="button" onClick="crafty_set_country(50)">
<input type="button" value="repopulate" name="button" onClick="crafty_set_country(100)">
</form>
</body>
</html>
Many thanks! Martin hey guys The first dropdown has some options as : abc(a) bcd(a) cde(b) def(b) efg(c) fgh(c) The second dropdown has : a b c On selecting abc(a) in first dropdown the 'a' must get selected in second dropdown,on selecting cde(b) second dropdown must have 'b' and so on,also the second dropdown value should be disabled(grayed out) for user.Need the code in javascript.ty in advance. |
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