Javascript get reference to parent object/class from event handler

Question

I have a class (or function-containing object; I\'ve heard that there is no such thing as a Javascript class) called Foo, with an event handler that is attached to a click e

Answer 1

function Foo() {
   this.num=0;
   $(document).on('click', 'element', this, this.eventHandler);
   this.eventHandler=function(e) {
      var _this = e.data; 
      _this.num++;
   }
}

1) Use JQuery on() method to attach event listeners. 2) Use a reference _this for accessing parent class.