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Editorial Team
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Asked: 2026-06-14T02:37:55+00:00

In IE9 I am getting an error Microsoft JScript runtime error: ‘populatedropdown’ is undefined

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In IE9 I am getting an error Microsoft JScript runtime error: ‘populatedropdown’ is undefined on the line <input type="button"....

I assume I am not escaping the literal values correctly. How should I change?

<html>
<head>
<title>Add items to dropdown</title>

<script type="text/javascript">
function populatedropdown(var devicelist) {
    var devList = document.frm.optdevices;
    var arrDev = split(devicelist, ";");

     devList.options.length = 0; // this removes existing options

     for (var i = 0; i <= 3; i++) {
         var option = new Option(arrDev[i],i);
         devList.options[i] = option; 
     }
}

</script>

</head>
<body>
<form name="frm">

<select name="optdevices">
</select>

<input type="button" value="TestAdd" onclick="populatedropdown('201;202;203;')" />

</form>
</body>
</html>
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1 Answer

  1. Editorial Team

    First, you should not write var via defining function, and second use of function split is wrong, split should be used like
    var result = strToSplit.split(";"), if you wanna split by ; , you can read about split here Javascript Split method

    here is working snippet

    function populatedropdown(devicelist) {
    var devList = document.frm.optdevices;
    var arrDev = devicelist.split(";");

     devList.options.length = 0; // this removes existing options

     for (var i = 0; i <= 3; i++) {
         var option = new Option(arrDev[i],i);
         devList.options[i] = option; 
     }
}

    just tested on IE9

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