how to get selected item or value of html-combo box through javascript? 
December 30th, 2006, 06:21 AM
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Posts: 217
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i have a combo box with id="combo1", i want to get the selected item or value through javascript. help me plz...
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January 1st, 2007, 04:15 AM
| | Member | | Join Date: Dec 2006 Location: United States
Posts: 43
| | | re: how to get selected item or value of html-combo box through javascript?
I don't know what you want to get the value with but here is an example with a button: - <html>
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<head>
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<script language="javascript">
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function combofunction(the_value){
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// actions that you want to perform
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}
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</script>
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</head>
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<body>
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<select name="htmlcombo">
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<option name="box1" value="Value1">Display Text1</option>
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<option name="box2" value="Value2">Display Text2</option>
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<option name="box3" value="Value3">Display Text3</option>
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</select>
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<input type="button" name="combovalue" value="Get Combo Value" onclick="combofunction(htmlcombo.value)">
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</body>
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</html>
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January 1st, 2007, 12:04 PM
|  | Site Moderator | | Join Date: Nov 2006 Location: UK
Posts: 14,517
Provided Answers: 12 | | | re: how to get selected item or value of html-combo box through javascript?
Quote: |
Originally Posted by nirmalsingh i have a combo box with id="combo1", i want to get the selected item or value through javascript. help me plz... | Use the following code: - var combo1 = document.getElementById("combo1");
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var val = combo1.options[combo1.selectedIndex].text
If you have the form name, use that instead of getElementById.
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January 1st, 2007, 02:03 PM
|  | Moderator | | Join Date: Jul 2006 Location: The Netherlands
Posts: 4,139
| | | re: how to get selected item or value of html-combo box through javascript?
Quote: |
Originally Posted by nirmalsingh i have a combo box with id="combo1", i want to get the selected item or value through javascript. help me plz... | Easiest way is the following where your JS routine is triggered when you select an item from the drop down box. No need for a submit button. - function getCombo1(sel) {
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var value = sel.options[sel.selectedIndex].value;
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}
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<select id="combo1" onchange="getCombo1(this)">
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<option value="">Select combo</option>
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<option value="Value1">Text1</option>
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<option value="Value2">Text2</option>
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<option value="Value3">Text3</option>
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</select>
Ronald :cool:
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June 30th, 2009, 08:17 AM
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Posts: 225
| | | re: how to get selected item or value of html-combo box through javascript?
Quote:
Originally Posted by acoder  Use the following code: - var combo1 = document.getElementById("combo1");
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var val = combo1.options[combo1.selectedIndex].text
If you have the form name, use that instead of getElementById. | I have modified this code like this -
<input type="button" onclick="change(selectname.options[selectname.selectedIndex].value)"
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and passing to the click event of button. code works fine in IE but this does not work in Firefox Mozilla.
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June 30th, 2009, 11:13 AM
| | Site Moderator | | Join Date: Nov 2006 Location: UK
Posts: 14,517
Provided Answers: 12 | | | re: how to get selected item or value of html-combo box through javascript?
That's because selectname will be undefined. IE is wrong here. You need to either define selectname, or write it out in full twice.
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June 30th, 2009, 11:17 AM
| | Site Moderator | | Join Date: Nov 2006 Location: UK
Posts: 14,517
Provided Answers: 12 | | | re: how to get selected item or value of html-combo box through javascript?
Quote:
Originally Posted by acoder If you have the form name, use that instead of getElementById. | I did type this on January the 1st, 2007, but now I'd say that you should use document.getElementById(), though using the form name via document.forms[] is also valid. I'd also add that you can use the following code (as long as you have set the values of each of the options): - var combo1 = document.getElementById("combo1").value;
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June 30th, 2009, 11:20 AM
| | Familiar Sight | | Join Date: Nov 2007
Posts: 225
| | | re: how to get selected item or value of html-combo box through javascript?
Quote:
Originally Posted by acoder I did type this on January the 1st, 2007, but now I'd say that you should use document.getElementById(), though using the form name via document.forms[] is also valid. I'd also add that you can use the following code (as long as you have set the values of each of the options): - var combo1 = document.getElementById("combo1").value;
| thanks for kind effort to solve the problem!
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