Modifying Control LED program

@rahul.singh1

<html>
   <head>
       <title>Bolt IoT Platform</title>
       <script type="text/javascript" src="https://cloud.boltiot.com/static/js/boltCommands.js"></script>
       <script>
       setKey('{{ApiKey}}','{{Name}}');
       </script>
   </head>
   <body>
       <center>
       <button onclick="setInterval(function(){led_off(), led_on()}, 30000)">ON</button>
       <button onclick="digitalWrite(1, 'LOW');">OFF</button>
       </center>
       <script>
       function led_on()
       {
           digitalWrite('1', 'HIGH');
       }
       function led_off()
       {
           digitalWrite('1', 'LOW');
       }
       </script>
   </body>
</html>