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Editorial Team
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Asked: 2026-05-28T14:51:43+00:00

On my dropdownlist, I set it up so the onchange should call checkval and

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On my dropdownlist, I set it up so the onchange should call checkval and pass in the id of element. I just started off with really basic login, but cant even get the alert to display. What am I doing wrong?

<!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>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>Untitled Document</title>
<script>
function checkval(id){
    if($('#' + id).val == "Other")
    {
        alert("You Selected Other");
        //other logic will go here
    }
}
</script>
</head>

<body>
<select name="items1[]" id="items1[]" onchange="checkval(id);">
    <option selected value="">Select One</option>
    <option value="one">One</option>
    <option value="Other">Other</option>
  </select>

<select name="items2[]" id="items2[]" onchange="checkval(id);">
    <option selected value="">Select One</option>
    <option value="one">One</option>
    <option value="Other">Other</option>
  </select>
</body>
</html>
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1 Answer

  1. Editorial Team

    Edit: Seems like it fails for id items1[].. So changed your markup bit.. Fixed jsFiddle here.

    See link for What characters are allowed in DOM IDs?

    Change your markup as onchange="checkval(this.id);".

    and the script as

    function checkval(id){
    if($('#' + id).val() == "Other")
    {
        alert("You Selected Other");
        //other logic will go here
    }
}
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