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Editorial Team
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Asked: 2026-05-20T10:05:07+00:00

I want to disable the referenced control in the HTML and javascript below, yet

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I want to disable the referenced control in the HTML and javascript below, yet it’s not doing it. Seems simple enough. What could I be missing?

<html xmlns="http://www.w3.org/1999/xhtml">
<head><title>

</title>
<script language="javascript" type="text/javascript"> 

    function Disable(isDisable, controlID) {
        var objControl = document.getElementById(controlID);

        if (objControl != null) {
            objControl.disabled = isDisable;
        }
    }
</script>
</head>
<body>
    <form name="form1" id="form1">


<input name="date?4" type="text" value="1/1/2011 12:00:00 AM" id="date?4" runat="server" style="border-color:Black;font-family:Arial;width:300px;" 

/><input type="checkbox" style="font-family: Arial" onclick="Disable(this.checked, "date?4" );" >Disable
</form></body>
</html>
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1 Answer

  1. Editorial Team

    Your onclick is badly formatted:

    onclick="Disable(this.checked, "date?4" );"

    Use this instead:

    onclick="Disable(this.checked, 'date?4' );"

    If you use double quotes (") as your attribute value delimiters, you can’t use them inside the value without escaping them. You should use single quotes (') inside.

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