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JavaScript - Dropdown Lists With Specific Options
Hi,
I have two dropdown lists, and I want to have each option from the first dropdown list to give the specific options on the second dropdown list. For instance, <select name="module"> <option value="pic1.jpg>TM1</option> <option value="pic2.jpg>TM2</option> <option value="pic3.jpg>TM3</option> </select> <select name="location"> <option value="loc_1">Box1</option> <option value="loc_2">Box2</option> <option value="loc_3">Box3</option> Note: The option values are just examples, but each option must have a value in order for other things to work. Here is what I need to do: If TM1 is selected, only Box1 and Box 2 are available (Box3 is removed from the dropdown "location" list); If TM2 is selected, only Box 2 is available (Box 1 and 3 are removed from the dropdown "location" list); If TM3 is selected, all options in the dropdown "location" list are available. My javascript knowledge is very limited. Any help is greatly appreciated. Thanks in advance, JW Similar TutorialsHi, 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 Using Javascript / jQuery, I'm trying to produce a series of dropdowns ("<select>") that have their options filtered as the user selects from them. For example: DROPDOWNS Field 1: - value_1 - value_2 Field 2: - value_3 Field 3: - value_4 - value_5 COMBINATIONS - value_1, value_3, value_5 - value_1, value_3, value_4 - value_2, value_3, value_5 When a user selects Field 3 - value_4, the unavailable options will be removed - ie, Field 1 - value_2 (there is no combination that allows value_2 and value_4 to be selected together). I have an array of the allowed combinations like this (although I can tweak the structure if necessary): Code: var combinations = [["value_1", "value_3", "value_5"], ["value_1", "value_3", "value_4"], ["value_2", "value_3", "value_5"]]; When a option is changed all the current entries are removed and only the allowed combinations added back in. Where I'm struggling is with how to find which combinations are acceptable based on what has already been selected. I'd really appreciate any pointers or just a fresh perspective on this because I seem to be going round in circles! Thanks! Hi! I have the following javascript and accompanying html but the i keep getting the error: Unable to get value of the property 'options': object is null or undefined pointing to this line of the code " $thisSelectedValue = $formField.options[ $formField.selectedIndex ].value;" Can someone help me please... thanks in advance. Javascript Code: <script type="text/javascript">
$allValues = new Array();
$allValues[0] = 'Choose One';
$allValues[1] = 'A1';
$allValues[2] = 'A2';
$allValues[3] = 'A3';
$allValues[4] = 'A4';
$allValues[5] = 'A5';
function stripDupelicateValues(inElementId)
{
// get current list of all selected values
$selectedValues = new Array();
for( $position in $allValues )
{
if( $position != 0 )
{
$formField = eval( 'document.crewchange.emp_' + $position );
// preserve our selected values
$thisSelectedValue = $formField.options[ $formField.selectedIndex ].value;
$selectedValues[$thisSelectedValue] = true;
}
}
for( $position in $allValues )
{
if( $position != 0 )
{
$formField = eval( 'document.crewchange.emp_' + $position );
// preserve our selected values
$thisSelectedValue = $formField.options[ $formField.selectedIndex ].value;
// wipe out the previous choices
$formField.options.length = 0;
// create default option
$formField.options[0] = new Option( $allValues[0], 0 );
for( $optionValue in $allValues )
{
// add each of our non selected values
if( $selectedValues[$optionValue] != true )
{
$formField.options[$formField.options.length] = new Option( $allValues[$optionValue], $optionValue );
}
// create the option for our selected value
else if( $thisSelectedValue == $optionValue )
{
$index = $formField.options.length;
if( $optionValue != 0 )
{
$formField.options[$index] = new Option( $allValues[$optionValue], $optionValue );
$formField.options[$index].selected = true;
}
}
}
}
}
}
</script>
Html Code: <form action="cc2.php" method="post" name="cc"> <select name='emp[]' id='emp_1' onChange='stripDupelicateValues(this.id)'> <option>Choose One</option> <option value='1'>A1</option> <option value='2'>A2</option> <option value='3'>A3</option> <option value='4'>A4</option> <option value='5'>A5</option> </select> </form> Error Msg Code: Message: Unable to get value of the property 'options': object is null or undefined Dependable dropdown lists (4 level) 1 Level dropdown list 2 Level dropdown list 3 Level dropdown list 4 Level dropdown list Every dropdown list is depends on another dropdown list For example if I select a value from 1 dropdown list then 2 dropdown list will appear. And then I select a value from 2 dropdown list then 3 dropdown list will appear. And if I select a value from 3 dropdown list then 4 dropdown list Multiple selection will be enable. It means every dropdown list may have hundreds of values. Thus, In this situation of multiple selection of values I analyze that, use of dropdown isn't suitable because if a dropdown value has 500 related values then these 500 values disturb the page design. So, is there any other better solution for it? Another thing that has been driving me crazy is that css positioning is handled differently by different browsers. JS is not my area, but I can do a lot with CSS, and I do, but cross browser compatibility is killing me. I can use an IF IE statement and only IE runs that segment of code, but I haven't been able to figure out out how to make ONLY firefox or ONLY opera or safari enact an encapsulated segment of code. The same type of IF statement doesn't work for them. Is there a single method using JS that works for all browsers? Thre is probably a very simple answer and I am just missing it somehow. Okay, I'm having some trouble getting my head around how to do this.. Code: <select> <option value="A">A</option> <option value="B">B</option> <option value="C">C</option> </select> <select> <option value="Rhino">Rhino</option> <option value="Bird">Bird</option> <option value="Rooster">Rooster</option> </select> <select> <option value="0202A">Rhino - Text</option> <option value="0203A">Rhino - Text2</option> <option value="0204A">Bird - Text1</option> <option value="0205A">Bird - Text2</option> <option value="0202B">Rhino - Text</option> <option value="0204B">Rhino - Text2</option> <option value="0204C">Rooster - Text1</option> <option value="0205C">Rooster - Text2</option> <option value="0206C">Rooster - Text3</option> </select> So say we had those three drop-downs. I'm looking to make it so that second drop-down only has options corresponding to a relationship between the first and the third drop-down. Example - if you select A in the first drop-down you only see Rhino and Bird in the second drop-down. If you select B you will only see Rhino in the second drop-down. Lastly, if you select C you will only see Rooster in the second drop-down. Just can't figure this out. >.< 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. Hello, I am completely new to HTML/JS/CSS, therefore I know very little. I have two drop-down prompt controls with month names. One has just one value (say "July") and the other has all the months of the year ("January".."December"). The first prompt control is hidden on the page. How do I set the default selection of the second prompt control to the value present in the first prompt control? So, when the page is run, the second prompt control should automatically show "July". I was reading up on the selectedIndex property (?), but I know that it won't work because I want Index 0 to be selected in the first control and Index 6 in the second, and I expect it to change every month (next month it will be index 7 that should be automatically selected). If it matters, I am using IE8. Thanks! I've got 2 drop down boxes, dropdown1 and dropdown2, and i want certain options on dropdown2 to be greyed out or unavailable if certain selections are made in dropdown1. is this possible? and if so, how? thanks Hi I am trying to use Overlib code to develop a dropdown box area that I can populate with categories and buttons, however the Overlib seem to lie relevent to the mouse and not the button. Does anyone know any good examples maybe jquery, to create this type of large dropdown. I want to be able to populate the area with images, and categories using php. I hope this make some sense. Steve I'm trying to make a jQuery slider, and I want the user (the person who installs it on their site) to be able to specify options easily. I know the Nivo slider does it from within the $(document).ready() event, but I can't figure out how to do it that way. I want it to be like this: Code: <script>
$(document).ready(function() {
myFunction({
option1: 'value1',
option2: 'value2',
etc: 'etc'
});
});
</script>
But how do I recover this data so I can use it later? Please i am new here and i need some urgent help. I am not much familiar with JavaScript. i have 3 options list as <ul> now what i want is when first scrollbar is chosen the second and third will be enable and will display dates and time..and when somebody choose a date he will be taken to a registration form. for example in my second option i will display dates this will be only enable when the city is being selected from first list: Code: <select> <option>Please Select</option> <option> 12/12/2009</option> <option > 12/12/2010</option> <option> 12/12/2011</option> <option> 12/12/2012</option> </select> here is the code for my option list: Code: <ul>
<li>I am in City<select name="dates">
<option value=0 >Please Select</option>
<optgroup label='test'>
<option value=3 style='font-family:Arial; color:#ffffff;'> City One</option>
<option value=4 style='font-family:Arial; color:#ffffff;'> City Two</option>
<option value=5 style='font-family:Arial; color:#ffffff;'> City Three</option>
<option value=6 style='font-family:Arial; color:#ffffff;'> City Four</option></select></optgroup>
</li>
<li>Dates Available<select name="dates">
<option value=0>Please Select</option></select>
</li>
<li>Times Available<select name="dates">
<option value=0>Please Select</option></select>
</li>
</ul>
Thanks for any help I currently have two selectbox, the first for categories and the second for subcategories. When an option from the category selectbox is chosen I would like the subcategory selectbox to be filled with options drawn from an array. The following code I have works for Chrome and Firefox but not in IE, I would appreciate any help to fix the code or new code which does a similar function. HTML: Code: <select size="9" id="category" name="category" onclick="return categoryChange();">
<option>Antiques ></option>
<option>Art and Crafts ></option>
</select>
<select style="visibility:hidden" id="subcategory" name="subcategory" size="9">
</select>
JAVASCRIPT: Code: function addOption(selectbox,text,value){
var optn = document.createElement("OPTION");
optn.text = text;
optn.value = value;
selectbox.options.add(optn);
}
var antiques = new Array("Furniture","Ceramics","Glass");
var art = new Array("Drawings and Paintings","Photographs");
function categoryChange(){
document.getElementById("subcategory").style.visibility = "visible";
document.getElementById("subcategory").innerHTML = "";
if(document.getElementById("category").value == "Antiques >"){
for (var i=0; i < antiques.length;++i){
addOption(document.myForm.subcategory, antiques[i], antiques[i]);
}
}
else if(document.getElementById("category").value == "Art and Crafts >"){
for (var i=0; i < art.length;++i){
addOption(document.myForm.subcategory, art[i], art[i]);
}
}
}
Hi there, I am looking for a javascript code for an html file. I am looking for something where when you put your mouse over the text, a drop down list will come down. If anyone can point me in the right direction that would be helpful. An example would be on a site like www.espn.com - when you put your mouse over NBA the following options appear: NBA Home, Scores, Schedule, Teams, etc. I have the following code below to make and populate a select box for a row. It is working on my IE, Firefox, and Chrome, but some others are having problems. It makes the select box, but it does not put the options in there. I am having issues troubleshooting because I cannot replicate the error. Any ideas? Code: newManufacturerCell = newRow.appendChild(document.createElement('td'));
var newSelect=newManufacturerCell.appendChild(document.createElement('select'));
var firstOption=document.createElement('option');
var secondOption=document.createElement('option');
firstOption.text="Dell DCS";
secondOption.text="Hp";
newSelect.add(firstOption,null);
newSelect.add(secondOption,null);
newSelect.id="man"+count;
Hello everyone, Forgive me if I ask something stupid or don't word something just right. Basically in short I'm really struggling because I don't know javascript beyond the simplest of basic's "manipulating other code".... What I'm after or trying to do is simply create a script to launch a new page after a X amount of time, like a popup. But I need the new window to have the following options like no toolbar or scroll bars etc... This is the code I've been trying to manipulate for my purpose and just can't get it right meaning it doesn't work at all in fact I haven't even been able to get the timer part worked in since I couldn't get the launch part working..... I've made a web app using asp.net & vb.net and need a launch page so I don't have any toolbars or scrollbars etc.... Any help or input is much appreciated!! Thanks Code: <html>
<script>
var customerWindow;
function launchit() {
var var_height = screen.availHeight - 10;
var var_width = screen.availWidth - 10;
var customerUrl = "default.aspx";
if ( !customerWindow || customerWindow.closed ) {
options = 'top=0,' +
'left=0,' +
'height=' + var_height + ',' +
'width=' + var_width + ',' +
'fullscreen=no,' +
'directories=no,' +
'location=no,' +
'menubar=no,' +
'resizable=yes,' +
'scrollbars=yes,' +
'status=yes,' +
'titlebar=yes,' +
'toolbar=no';
var wname = new String(location.pathname);
var re1 = /\//g;
var re2 = /\\/g;
var re3 = /\./g;
wname = wname.replace( re1, "" );
wname = wname.replace( re2, "" );
wname = wname.replace( re3, "" );
customerWindow = window.open(customerUrl, wname, options);
if (customerWindow == null) {
alert("Could not open a new window. Are popups being blocked?");
}
else {
customerWindow.opener = null;
}
}
else {
customerWindow.focus();
}
}
</script>
<head>
<title>Test Lanuch</title>
</head>
<body id="launcher" onload="launchit();">
<div class="submit">
<input class="button" type="button" value="Launch" onClick="javascript:launchit();" />
</div>
</body>
</html>
Hi, I have two dropdown lists with the second one being dependent on the selection in the first. Options in list 1: 1,3 or 4 List two should be enabled when 3 or 4 is selected in list 1. So far so good, managed to get it to work with only one set of lists, but I actually have 18 of those sets in this form: Code: <select name="fw[$i]" id="fw[$i]"> <option value="1">FWH</option> <option value="3">links</option> <option value="4">rechts</option> <option value="0" selected></option> </select><br /> <select name="lie[$i]" id="lie[$i]" disabled="disabled" onchange="showBox($i,xxx);"> <option value="0" selected>---</option> <option value="1">gut</option> <option value="2">schlecht</option> <option value="3">Strafschlag</option> <option value="4">OB</option> </select> $i is my index generated by my PHP script and runs from 1 to 18. Everything works just fine as long as the index is not in play. With the index my function breaks, most probably due to my inability to extract the second parameter (xxx above) from the selection field. Here's my function, there could be something wrong there too with how exactly to specify the proper dropdown list to enable. Code: function showBox(field,val) {
if (val > 1) {
var box = 'lie[' + field + ']';
document.form1.box.disabled == false;
}
else {
document.form1.box.disabled == true;
}
}
Finally, I'm not that adept in javascript programming, more like a trial and error guy, how has hit the wall with this problem. Thanks in advance! Joe If i have an existing HTML Select statement with options specified, and then based on an even, i want to rebuild that options list, how do I wipe the existing options parameters in order to add new ones? Is that even possible?
Okay so I'm trying to come up with as many alternative methods to accomplish something. So I'm just seeking input from anyone who is willing to supply some. After the user clicks on a match type it'll know HOW MANY sides to the match there are so say for a singles match it'd have 2 sides (1 vs. 1) for a Triple Threat Match it'd have 3 sides (1 vs. 1 vs. 1) and so on. All matches have a stored field in the database of how many sides they have. So I'm thinking that I could have it create 3 divs (or something) down in the competitors area of how many sides there are in the match (separated by a VS. text block) and when the user selects a character from the dropdown and adds a character the user can maybe drag and drop the character's name to whatever side they choose. Its one idea. If you think of an EASIER more EFFICIENT way to do something like this and have an idea say something please or even if you can't let me know that you think it's a worth while idea. Code: <label for="matchtypedrop<?php echo $i+1 ?>">Match Type:</label>
<select class="dropdown" name="matchtypedrop<?php echo $i+1 ?>" id="matchtypedrop<?php echo $i+1 ?>" title="Match Type <?php echo $i+1 ?>">
<option value="0">- Select -</option>
<?php
$query = 'SELECT id, matchtype FROM matchtypes';
$result = mysqli_query ( $dbc, $query ); // Run The Query
while ( $row = mysqli_fetch_array ( $result, MYSQL_ASSOC ) ) {
print "<option value=\"".$row['id']."\">".$row['matchtype']."</option>\r";
}
?>
</select>
<label for="competitors<?php echo $i+1 ?>">Competitors:</label><ul id="competitors<?php echo $i+1 ?>" style="list-style: none; margin-left: 195px;"></ul>
<select class="dropdown" name="charactersdrop<?php echo $i+1 ?>" id="charactersdrop<?php echo $i+1 ?>" title="Characters Dropdown <?php echo $i+1 ?>" style="margin-left: 195px;">
<option value="0">- Select -</option>
<?php
$query = 'SELECT id, `character` FROM characters ORDER BY `character`';
$result = mysqli_query ( $dbc, $query ); // Run The Query
while ( $row = mysqli_fetch_array ( $result, MYSQL_ASSOC ) ) {
print "<option value=\"".$row['id']."\">".$row['character']."</option>\r";
}
?>
</select>
<input type="button" value="Add Character" class="" onclick="Competitors(<?php echo $i+1 ?>)"/>
Hello! I'm trying to figure out a way of having + and - buttons which cycle through the options in a select box such as: <select name="distance" id="jr_radius"> <option value="0.5">0.5 Miles</option> <option value="1">1 Mile</option> <option value="3" selected="selected">3 Miles</option> <option value="5">5 Miles</option> <option value="10">10 Miles</option> </select> So far I've only been able to have a button change the select box to a specific value, or add or subtract to a numerical value. Both of which aren't quite right. Ideally if the default value is "3" then clicking the + button could make it "5" and clicking the same button again would make it "10". Visa versa, the minus button would make the value "1" and then if pressed again it would become "0.5". Does that make sense? Any help will be greatly appreciated! |
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