Passing around function including its context in javascript

Question

There is something I don\'t understand in javascript and broke down a sample problem to an essential case:

    a = function () {
      this.b = 5;
    }

    a.p         


        

Answer 1

You need to call the method using the object to get the context right. So:

var e = function() { return d.c(); };

In newer browsers you can use the bind method to do the same:

var e = d.c.bind(d);

In jQuery for example there is the proxy method that you can use also in older browsers:

var e = $.proxy(d.c, d);