What is a best practice for ensuring “this” context in Javascript?

Question

Here\'s a sample of a simple Javascript class with a public and private method (fiddle: http://jsfiddle.net/gY4mh/).

function Example() {
    function privateFun         


        

Answer 1

I would say the proper way is to use prototyping since it was after all how Javascript was designed. So:

var Example = function(){
  this.prop = 'whatever';
}

Example.prototype.fn_1 = function(){
  console.log(this.prop); 
  return this
}

Example.prototype.fn_2 = function(){
  this.prop = 'not whatever';  
  return this
}

var e = new Example();

e.fn_1() //whatever
e.fn_2().fn_1() //not whatever

Here's a fiddle http://jsfiddle.net/BFm2V/