Simple Blinking Button

buttonBlink.js

var count = 0;
var buttonBlink = setInterval(function(){
var button = $('#button');        
if( button.hasClass('selected') ) {
        button.removeClass('selected');
    }
    else {
        button.addClass('selected');
    }
    
    if( count > 2 ) {
        clearInterval(buttonBlink);
    }
    else {
        count++;
    }
},2000);