JavaScript - Check Which Dropdown Option Is Selected

I have a simple form with an options drop down box:

Code:

<form method="POST" name="form">
<select autocomplete="off" id="input" name="input" onchange="this.form.submit();goHere();"> 
<option>Choose...</option>
<option>Question1</option>
<option>Question2</option>
<option>Question3</option>
</select>

I wish to identify the option chosen in the function but not by its value, by its position:

Code:

<script>
function goHere(){
var s = document.getElementById("input");
 if (s.selectedIndex == -1) return;
 var u = s.form.elements[i];
alert(u);
</script>

I was hoping that variable "u" would be either 0, 1, 2, or 3.

How can I get a variable to alert me the position of the selected option in the form? I think it is elements[i].

Hello everybody,

I have a javascript adding new options to a drop down select menu getting the information from the database. The code is as written below:
Code:

function setOptions1() {
var selbox2 = document.egitimgiris.alttipID;
selbox2.options.length = 0;
selbox2.options[selbox2.options.length] = new Option('Option1','22')
selbox2.options[selbox2.options.length] = new Option('Option2','23')
selbox2.options[selbox2.options.length] = new Option('Option3','24')
selbox2.options[selbox2.options.length] = new Option('Option4','25')
}

I want one of them to be added as selected. I will put an "if" check and if it the value of the option and the value in the database is equal I want that option to be added as "selected".

Is this possible? If yes, how? Please help.

Thanks and regards
telmessos

Greetings,

I am trying to make a form that collects "Number of Children" a parent has. If they select "4" from the select input, then I want to slidetoggle out the appropriate divs, one for each child.

Code:

<select id="NumberofChildren" name="NumberofChildren">
        <option value="0">0</option>
		<option value="1">1</option>
		<option value="2">2</option>
		<option value="3">3</option>
		<option value="4">4</option>
		<option value="5">5</option>
</select>

The div IDs to display are 1child, 2child, 3child, 4child, 5child.

I have been able to use slidetoggle in the past when attached to a button, but this one has me lost. Anyone know how to accomplish this? Your help is greatly appreciated! Thank you!

Hi,
I am using following code--
Code:

<td>
<centre>
<select id=\"extenddays\"  size=\"1\" name=\"extenddays\">
<option value\=\"2\"> 2 </option>
<option value\=\"4\"> 4 </option>
<option value\=\"7\"> 7 </option>
</select>
<a href=?ext_days=\"extendform.extenddays.value\" & ?extfid=" . $data->{'fid'} ." \" >
<INPUT TYPE=\"SUBMIT\" NAME=\"extend\" VALUE=\"extend\" />
</a>
</centre>
</td>

Here, I want that when I click on 'extend' button, it should redirect to the url given in the href.. But while forming url run time , it is not retrieving the value of "extenddays" ( which is selected option value)..

Please help.

Cheers,
Shashikant Shinde

I have an options list that is generated from a database. It currently has ~125 options in it.

I've received the request that the user be able to either enter the corresponding number or select the option from the list.

How can I update the "selected" attribute in the options list based on a number that may be entered in another text entry box?

I'm taking a beginning javascript class and have been trying to figure out one last part of a homework assignment and am just not seeing how to work it out. Any help is greatly appreciated!

What I'm having trouble with is doing the text verification. When a user selects an option from the select list they then need to type in the text area given. If the user doesn't type the word selected in the list then an error message should appear under the text area. If you look at my code you'll see that I have the text_check() function doing the verification. I can get it to work when there is only one option but once I add the other two it stops working. I've tried if... else and other variations, but can't seem to nail it down. Thanks!

Code:

function select_function()
{
 var medical=document.getElementById("medical_list")
 var selected_item=medical.selectedIndex
 if (selected_item==0)
 {
 	document.getElementById("enter_info").innerHTML="Enter Your" +"<span style='color:blue'>" +" Medication" + "</span>"+ " Information"
	var comments=document.getElementById("comments");
	comments.focus();
	
 }
 if (selected_item==1)
 {
 	document.getElementById("enter_info").innerHTML="Enter Your" +"<span style='color:blue'>" +" Hospitalization" + "</span>"+ " Information"
	var comments=document.getElementById("comments");
	comments.focus();
 }
 if (selected_item==2)
 {
 	document.getElementById("enter_info").innerHTML="Enter Your" +"<span style='color:blue'>" +" Physician" + "</span>"+ " Information"
	var comments=document.getElementById("comments");
	comments.focus();
 }
 
}

function text_check()
{
  var user_comments=document.getElementById("comments").value.toLowerCase(); 
	var med_comment=user_comments.indexOf('medication');
	var hosp_comment=user_comments.indexOf('hospitalization');
	var phys_comment=user_comments.indexOf('physician');	

 	mySelectList = document.getElementById("medical_list");
 
 	if (mySelectList.value='Medication' && med_comment==-1) 
	{
	 document.getElementById("word_error").innerHTML="You need to have the word,"+"<span style='color:red'>"+" Medication"+"</span>"+" somewhere in the text"; 
	}
	
	if (mySelectList.value='Hospitalization' && hosp_comment==-1)
 	{
 		document.getElementById("word_error").innerHTML="You need to  have the word,"+"<span style='color:red'>"+" Hospitalization"+"</span>"+" somewhere in the text";
	}	
	
	if (mySelectList.value= 'Physician' && phys_comment==-1)
	{
 	 document.getElementById("word_error").innerHTML="You need to have   the word,"+"<span style='color:red'>"+" Physician"+"</span>"+" somewhere in the text";
	}
}
	
function submit_alert()
{
 alert("You submitted the form")
}

function clear_error()
{
 document.getElementById("word_error").innerHTML=""; 
}

function changeDR()
{
 var my_textarea=document.getElementById("comments");
 
 var comment_string=my_textarea.value;
 
 var doctor=comment_string.indexOf('Dr.');

 var comment_string2='';
 
 if (comment_string < 0)
 {
 	comment_string2=comment_string
 } else {
 	 			comment_string2=comment_string.replace('Dr.','Doctor')
 }
 my_textarea.value=comment_string2;
 
}
</script>
</head>
<body style="background-color: silver">
<h2>Medical History</h2>

Select Category: <br>
<select id="medical_list" onChange="select_function();">
<option>Medication</option>
<option>Hospitalization</option>
<option>Physician</option>
</select>
<br><br><br>

<div id="enter_info">Enter Your <font color="blue">Medication</font> Information:</div>
<br>

<form method="post" action="">
<textarea id="comments" cols="60" rows="15" onBlur="text_check();" onFocus="clear_error();" onkeyup="changeDR();">
</textarea><br>
<div id="word_error"></div><br>
<input type="submit" value="Submit Information" onClick="submit_alert();"/>
</form>


</body>
</html>

Hi,
I'm new to JavaScript. I'm trying to create my form in such a way that if 'Premium' is selected, a the text box with label 'membership no' is displayed and if 'bronze' is select, the drop-down list 'sponsor' is displayed instead....here's what my form looks like...

PHP Code:
<form id="form1" name="form1" method="post" action="">
  <p>
    <label for="select">Membership:</label>
    <br />
    <select name="select" id="select">
      <option value="Premium" selected="selected">premium</option>
      <option value="Bronze">bronze</option>
    </select>
  </p>
  <p>Membership No:<br />
    <input type="text" name="textfield" id="textfield" />
  </p>
  OR<br />
  Sponsor:
<br />
  <select name="select2" id="select2">
    <option value="329">329</option>
    <option value="234">234</option>
  </select>
</form> 


appreciate the help

Hi,

Is there anyone who could help me figure out how to Change a Hidden Fields Name based on selected option. The hidden fields name is sent off and I need to change the name depending on what option they select.
For if they select MyList the hidden field name needs to be SelectLists[40] or if they select testlist the hidden field name needs to be SelectLists[41].

This is probably way, way off but I've done this and it doesn't work.

Any help would be greatly appreciated, thanks.


<script language="JavaScript">
function changelist() {
//here we assign the value of the hidden input to x
x=eval(document.getElementByName("SelectLists[40]");

if(document.getElementById("SelectLists[40]").selected=true
x=SelectLists[40]

else(document.getElementById("SelectLists[41]").selected=true
x=SelectLists[41]

else(document.getElementById("SelectLists[42]").selected=true
x=SelectLists[42]

//now we assign the new value to the input
document.getElementById("theHiddenInput").name=x;

//and now we test
alert(document.getElementById("theHiddenInput").name)


}
</script>





<input type="hidden" id="theHiddenInput" name="SelectLists[40]" value="Yes">
<select class="inpBox" style="width: 287px" name='mailinglist' id="lists" onchange="changelist()">
<option value="SelectLists[40]" name="SelectLists[40]" id="SelectLists[40]">MyList</option>
<option value="SelectLists[41]" name="SelectLists[41]" id="SelectLists[41]">testlist</option>
<option value="SelectLists[42]" name="SelectLists[42]" id="SelectLists[42]">testlist2</option>

I've inherited this piece and now I'm suppose to add to it. Its basic function currently is when the "Other" option is selected, a hidden text field shows. Now, I need to add when "Athletics" is selected, another hidden select group will show.
I've set up the new Select group already, but not sure how to incorporate it into the already existing script. I've been researching for two days, and hopefully this form will be helpful.


Code:

<select id="Program" name="Program" size="1" onchange="
      $other = document.getElementById('other_program').style;
      $invoice = document.getElementById('invoice');
      if (selectedIndex==6) {
        $other.visibility='visible';
        if ($invoice.value == 'General Fund') $invoice.value='';
      } else {
        $other.visibility='hidden';
        if (selectedIndex==1) {
          $invoice.value='Renegade Fund';
        } else {
          $invoice.value='Please Specify';
        }
      }
      ">
      <option selected="selected" value="Not Selected"> - - Select One - - </option>
      <option value="Athletics">Athletics</option>
      <option value="Drum Line">Drum Line</option>
      <option value="Renegade Fund">Renegade Fund</option>
      <option value="General Scholarships">General Scholarships</option>
      <option value="President's Circle">President's Circle</option>
      <option value="Other">Other</option>
    </select>

    <span id="other_program"><input type="text" id="invoice" name="invoice" size="15" /></span>

    <!-- the following is the new select group ive set up
    <span id="alumni">
        <select id="select-alumni" name="select-alumni" size="1">
            <option selected="selected" value="Not Selected">Yes or No</option>
            <option value="Yes-alumni">Yes</option>
            <option value="Not-alumni">No</option>
        </select>
    </span>
    -->

i'm working with a city select option, a hotel select option & an iframe. the hotel select option is populated depending on the chosen city which then updates the iframe src. this is all working fine.

the trouble im having is that when the page is refreshed, normal f5 way, the hotel option changes whereas the city option & the iframe src remains the same??

this problem does not occur on a force refresh via control + f5 as then both select options & iframe src revert to their original state.

I don't want the city option to change upon a normal page refresh. how do I go about this?

below are the city, hotel select options & iframe
Code:

    <form name="hotelslist" id="hotelslist">
        <select id="cities" name="cities" onChange="hotel_list(hotelslist.cities.selectedIndex);loadHotel();">
          <option value="Baddeck">Baddeck</option>
          <option value="Banff">Banff</option>
        </select>
    <select id="hotelnames" name="hotelnames" onChange="loadHotel();">
          <option value="Inverary Resort, Baddeck">Inverary Resort, Baddeck</option>
        </select>
      </form>

<iframe name="hotelframe" id="hotelframe" src="http://www.google.com" scrolling="no" width="660" height="1000" marginwidth="0" marginheight="0" hspace="0" vspace="0" frameborder="0"> <p>Your browser does not support iframes.</p> </iframe>

below is my javascript functions
Code:

function loadHotel() { 
    var destURL = document.hotelslist.hotelnames.options[document.hotelslist.hotelnames.selectedIndex].value; 
		window.frames["hotelframe"].location = destURL; }

var i;
function hotel_list(i){
var hotelslist = document.getElementById("hotelslist");
	hotelslist.hotelnames.options.length=0;
	
switch(i)
{	
case 0: //Baddeck
hotelslist.hotelnames.options[0] =new  Option('Inverary Resort, Baddeck','http://www.test0.com');
break;
case 1: //Banff
hotelslist.hotelnames.options[0] =new  Option('Banff Caribou Lodge & Spa','http://www.test1.com');
hotelslist.hotelnames.options[1] =new  Option('Banff Ptarmigan Inn','http://www.test2.com');
hotelslist.hotelnames.options[2] =new  Option('Banff Rocky Mountain Resort','http://www.test3.com');
hotelslist.hotelnames.options[3] =new  Option('The Rimrock Resort','http://www.test4.com');
hotelslist.hotelnames.options[4] =new  Option('Fairmont Banff Springs','http://www.test5.com/');
break;
}
}

can some one please advise on a cross browser solution?

thanks in advance.
Omar.

i have a simple form basically....and i want to display a div containing a message when a certain dropdown menu item is selcted...

as you will see...i have two divs in my message...one named website design and one named twitter design both set to display none

when website design is selected i want the websitemessage div to display

when twitter is selected i want the twitter message to display...

any thoughts? here is some of the code



Code:

<form id="contactform" action="contact-submit.php" method="post">

			<!-- form fields -->
			<div class="form">
			<label for="name">Name<em>&bull;</em></label>
			<input class="textbox required" type="text" name="name" id="name" /><br />


			<label for="email">E-Mail<em>&bull;</em></label>
			<input class="textbox required email" type="text" name="email" id="email" /><br />

			<label for="subject">What are you interested in?<em>&bull;</em></label>
			<select type="text" value="Choose a Service" name="subject" id="subject" onchange="Select(this,'budget',1);"/>
           <option selected> -- Select A Design Service --</option>
           <option id="website"> Website Design </option>
             <option> Twitter </option>
             <option> Ning or Tumblr </option>
             <option> Flyers </option>
             <option> Business Card or Brochure</option>
             <option> Album or Mixtape cover</option>
                <option>Other</option>
            </select><br />
<div id="websitemessage" style="display:none;"><label> Do you already have a Logo to use for this website?  </label>
<input style="width:auto;margin-left:10px;"  type="radio" name="budget" value="Logo: Yes"> Yes
<input style="width:auto;margin-left:10px;"  type="radio" name="budget" value="Logo: Not yet"> Not yet
</input>

</div>
<div id="twittermessage" style="color:#B5B5B5;
display:none;"><SPAN>Twitter Designs start at  </SPAN><span style="color:#000;"> $30</SPAN>
</div>

any ideas on what script i would put into the head tags to make that happen?

I have some code for a dropdown where when the 'Other' option is selected a textbox appears and the user can put in their info.

What I'm wondering is, how can i set it up so if the Other option isn't selected the dropdown info is sent to my database Name field, and if the Other option is selected it sends the info that's typed in to the Name field in my database and does nothing with the actual 'Other' label in the dropdown?

here's the code i have so far

Code:

<script language="JavaScript" type="text/javascript">
<!--
function getOther(sel,fld){
fld.style.display = (sel.selectedIndex==sel.options.length-1)?"inline":"none";
}
//-->
</script>
<select name="Name" id="Name" onchange="getOther(this,this.form.oth);">
<option>Name 1
<option>Name 2
<option>Name 3
<option>Name 4
<option>Name 5
<option>Other
</select>
<br><input type="text" name="Other" style="display: none;">

HI
I'm using this form in my site, but I want to amend it so the form updates based on the option ID, not the option Value.

This will make it easier for me to save the correct data in the value field..

Any ideas ?

PHP Code:
<html>
<head>
<script type="text/javascript">
function setOptions(chosen) {
var selbox = document.myform.opttwo;
 
selbox.options.length = 0;
if (chosen == " ") {
  selbox.options[selbox.options.length] = new Option('Please select one of the options above first',' ');
 
}
if (chosen == "1") {
  selbox.options[selbox.options.length] = new Option('first choice - option one','oneone');
  selbox.options[selbox.options.length] = new Option('first choice - option two','onetwo');
}
if (chosen == "2") {
  selbox.options[selbox.options.length] = new Option('second choice - option one','twoone');
  selbox.options[selbox.options.length] = new Option('second choice - option two','twotwo');
}
if (chosen == "3") {
  selbox.options[selbox.options.length] = new Option('third choice - option one','threeone');
  selbox.options[selbox.options.length] = new Option('third choice - option two','threetwo');
}
}
</script>
</head>
<body>
<form name="myform"><div class="centre">
<select name="optone" size="1"
onchange="setOptions(document.myform.optone.options[document.myform.optone.selectedIndex].value);">
<option id="0" value=" " selected="selected"> </option>
<option id="1" value="1">First Option</option>
<option id="2" value="2">Second Choice</option>
<option id="3" value="3">Third Choice</option>
</select><br /> <br />
<select name="opttwo" size="1">
<option value=" " selected="selected">Please select one of the options above first</option>
</select>
<input type="button" name="go" value="Value Selected"
onclick="alert(document.myform.opttwo.options[document.myform.opttwo.selectedIndex].value);">
</div></form>
</body>
</html> 


So how do I get CHOSEN to equal the ID not the value ?

Thanks

Hi there,

I would like to create a page that has a dropdown menu populated with a list of images. When someone selects an image, the image and a URL to a webpage will display (screenshot below). Each image will have a different URL. How do I accomplish this?

Thanks!

Denise

I have a function that creates a Select dropdown on the fly:


function makeForm() {

mypara=document.getElementById("paraID");
myform=document.createElement("form");
myselect = document.createElement("select");

theOption=document.createElement("OPTION");
theText=document.createTextNode("Revenue");
theOption.appendChild(theText);
myselect.appendChild(theOption);

myform.appendChild(myselect);
mypara.appendChild(myform);
myselect.onchange=TitleOnChange;
mybreak=document.createElement("p");
myform.appendChild(mybreak);
}
function makeForm() {

mypara=document.getElementById("paraID");
myform=document.createElement("form");
myselect = document.createElement("select");

theOption=document.createElement("OPTION");
theText=document.createTextNode("Revenue");
theOption.appendChild(theText);
myselect.appendChild(theOption);

myform.appendChild(myselect);
mypara.appendChild(myform);
myselect.onchange=TitleOnChange;
mybreak=document.createElement("p");
myform.appendChild(mybreak);
}




I would guess that I have to add something like: theOption.setAttribute("value","1");


I want to be able to call the following function and execute a code base on the selection of the Select Dropdown:


<script type='text/javascript'>
function TitleOnChange()
{
if (document.form.select.value == "1")
{
alert("Value selected on the Select dropdonw is 1");
}

}

</script>
<script type='text/javascript'>
function TitleOnChange()
{
if (document.form.select.value == "1")
{
alert("Value selected on the Select dropdonw is 1");
}

}

</script>



I don't know why is not working. I assigned the value 1 to the select dropdown theOption.setAttribute("value","1");

I call the TitleOnChange function myselect.onchange=TitleOnChange;

And Finally I indicate that if the value is equal to 1 do...

view plaincopy to clipboardprint?
if (document.form.select.value == "1")
{
alert("Value selected on the Select dropdonw is 1");
}
if (document.form.select.value == "1")
{
alert("Value selected on the Select dropdonw is 1");
}



Does anyone knows why this doesn't work and how could I fix it?

Any helpt would be highly appreciate.

Thanks