CODEWITHSUNDEEP
javascriptinheritance
9TrSl9IAlaLfDmffagsw
9TrSl9IAlaLfDmffagsw

Reputation: 405

How to call JS parent-methods without prototypical inheritance

I'm working on a big project and decided against prototyping for inheritance (I wanted more control over var and this.* access).

Anyways, I have classes that look like this:

FirstScene.prototyp

FirstScene.prototype = Object.create(_SceneCanvas.prototype)
FirstScene.prototype.constructor = FirstScene

function FirstScene(){
     var arguments = [/*args*/]
     _SceneCanvas.apply(this, arguments)



     this.bar = function(){ /*do other stuff*/ }
}

If I was in foo() or bar() and wanted to call the parent method, how would I go about doing that? I tried some code that looked like _SceneCanvas.prototype.foo.call(params) to no avail.

Thanks!

Upvotes: 0

Views: 36

Answers (1)

Zachary Kuhn
Zachary Kuhn

Reputation: 1152

In JavaScript the common practice is to get a reference to the old function and call it from within the new function.

var bar = this.bar;
this.bar = function () {
  bar.call(this);
  // ...
};

Please check out this fiddle to see it in action.

Upvotes: 3

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