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<!DOCTYPE html> <html> <body> <form> <input type="button" id="btn01" value="OK"> </form> <p>Click the "Disable" button to disable the "OK" button:</p> <button onclick="disableElement()">Disable</button> <script> function disableElement() { document.getElementById("btn01").disabled = true; } </script> </body> <!-- Mirrored from www.w3schools.com/js/tryit.asp?filename=tryjs_button_disabled by HTTrack Website Copier/3.x [XR&CO'2014], Fri, 23 Jan 2015 07:36:49 GMT --> </html>
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