javascript event bind dynamic element
// bind click handler to element that is added later/dynamically
document.addEventListener('click', function(e){
if(e.target && e.target.id== 'myDynamicallyAddedElementID'){
//do something
}
});
//Alternatively, if your using jQuery:
$(document).on('click','#myDynamicallyAddedElementID',function(){
//do something
});