Disable and enable a radio button:
<!DOCTYPE html> <html> <body> Radio Button: <input type="radio" id="myRadio"> <button onclick="disable()">Disable radio button</button> <button onclick="enable()">enable radio button</button> <script> function disable() {//from ww w .j a v a 2 s.c om document.getElementById("myRadio").disabled = true; } function enable() { document.getElementById("myRadio").disabled = false; } </script> </body> </html>