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How to disable check boxes on a form using Java Script

Posted on 2011-03-15
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Last Modified: 2012-05-11
This is more of a Java script question. I see "JScript" as a choice of where to post this. I hope JScript is an abbreviation for Java Script.

I have an Asp.net web form with several check boxes on it. If someone checks one check box I need to then disable the other check boxes on the form. If they un-check the check box I need to re-enable the other check boxes on the form. Does anyone know how I can do this using Java Script?
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Question by:brgdotnet
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leakim971 earned 1000 total points
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by:foobarr
ID: 35157573

in markup
<asp:checkbox id="check1" runat="server" />
<asp:checkbox id="check2" runat="server" />
<asp:checkbox id="check3" runat="server" />

in code behind
on page load or wherever you are initializing

check1.attributes.add("onclick", "disableBoxes(this)")
check2.attributes.add("onclick", "disableBoxes(this)")
check3.attributes.add("onclick", "disableBoxes(this)")


in javascript in the markup

function disableBoxes(item)
{
  if (item.id == 'check1'){
       document.getelementbyid("<%= check2.ClientId%>").disabled = true;
       document.getelementbyid("<%= check3.ClientId%>").disabled = true;
  }
  else if (item.id == 'check2') {
    document.getelementbyid("<%= check1.ClientId%>").disabled = true;
       document.getelementbyid("<%= check3.ClientId%>").disabled = true;
  }
 else if (item.id =='check3') {
 {
    document.getelementbyid("<%= check1.ClientId%>").disabled = true;
       document.getelementbyid("<%= check2.ClientId%>").disabled = true;
}
}

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