$(function() {

var triggers = {space:"32",enter:"13",tab:"9"};

var triggerKeys = ["space", "enter"];

var triggerKeyCodes = {};

for (var i = 0; i < triggerKeys.length; i += 1) {

    triggerKeyCodes[triggers[triggerKeys[i]]] = true;

}

$('#input').on('keypress',function(event) {

 var unicode= event.keyCode ? event.keyCode : event.which;

   if(unicode in triggerKeyCodes) {

       event.preventDefault();

         alert('Function Worked');

      }

});

});