disable button

enable button and disable it based on check button .

Code:

<html>
<title>Disable button</title>
<head>
<script language="Javascript" type="text/javascript">
 function allowSubmit(){
  if (document.checkdiv.termscheck.checked==''){
   document.checkdiv.register.disabled=true
  }else{
   document.checkdiv.register.disabled=false
  }
 }
</script>
</head>
 
<body>
 
 <p>Site registeration:
 <ul>
 <li>
 Term1.
 </li>
 <li>
 Term2.
 </li>
 <li>
 Term3.
 </li>
 </ul>
 </p> 
 <form name="checkdiv" action="#" >
 <input type="checkbox" name="termscheck" onchange="allowSubmit()">I agree to these terms.
 <br>
 <input type="button" value="register"  name="register" disabled="disabled">
 </form>
</body>
 </html>

_________________
M. S. Rakha, Ph.D.
Queen's University
Canada

Author: DrRakha
Mastermind

Posts: 2715
Have thanks: 74 time

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