getting combo values

anbumozhip

how to get the selected combo values in a text box using on change event

Aug 1 '07 #1

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1581

gits

5,390

Expert Mod 4TB

hi ...

moved from js-articles-section to forum ...

please be a little bit more specific with your question ... you want the selected values of a multiselect select-box? ... and/or post some code you have done already ...

kind regards

Aug 1 '07 #2

anbumozhip

hi gits,
here is my code

[HTML]<html>
<head>
<script type="text/javascript">
function moveNumbers()
{
var no=document.getElementById("no")
var option=no.options[no.selectedIndex].text
var txt=document.getElementById("result").value
txt=txt + option
document.getElementById("result").value=txt
}
</script>
</head>

<body>
<form>
Select numbers:<br />
<select id="no" onchange="moveNumbers()" multiple="3">
<option>0</option>
<option>1</option>
<option>2</option>
<option>3</option>
<option>4</option>
<option>5</option>
<option>6</option>
<option>7</option>
<option>8</option>
<option>9</option>
</select>
<input type="text" id="result" size="20">
</form>
</body>[/HTML]

for the above code if suppose i select three values i need to get that values in that text box with comma separated with onchange event

Aug 2 '07 #3

gits

5,390

Expert Mod 4TB

hi ...

use the following function, and have a look how it works. selectedIndex only returns the first index of the selected option, so we have to loop and ask for the selected options:

Expand|Select|Wrap|Line Numbers

 
function moveNumbers() {

    var no_node         = document.getElementById("no");

    var no_node_options = no_node.childNodes;

    var result_node     = document.getElementById("result");

    var result_text     = '';
 
    for (var i = 0; i < no_node_options.length; i++) {

        var opt = no_node_options[i];
 
        if (opt.selected) {

            result_text += opt.text + ', ';

        }

    }
 
    // remove last comma through matching an regEx

    result_text = result_text.replace(/(, )$/, '');
 
    result_node.value = result_text;

}

and some additional hints ;)

- use code-tags when posting code here in the forum
- always use a semicolon to terminate every line of code in js

kind regards

Aug 2 '07 #4

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