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

Another approach is to use "apply" to explicitly set what the methods "this" should be bound to.

function Test() {
    this.name = 'test';
    this.logName = function() {
        console.log(this.name);
    }
}

var foo = {name: 'foo'};

var test = new Test();
test.logName()
// => test
test.logName.apply(foo, null);
// => foo

Yet another approach is to use "call":

function Test() {
    this.name = 'test';
    this.logName = function() {
        console.log(this.name);
    }
}

var foo = {name: 'foo'};

var test = new Test();
test.logName()
// => test
test.logName.call(foo, null);
// => foo

both "apply" and "call" take the object that you want to bind "this" to as the first argument and an array of arguments to pass in to the method you are calling as the second arg.