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<Objects in Javascript ⁄ >




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As a consequence of building iconfu.com, I've used more javascript in the past four months than in all the previous ten years combined. Javascript is not difficult, but its superficial similarities with java can be misleading for someone, such as I, coming from that language. Javascript is also, surprisingly, a respectable language, tarnished only by browser incompatibilities and buggy implementations (I'm thinking of one browser implementation in particular).

Here are the three worst stumbling blocks I faced on the slow path of figuring out how objects work in javascript: (1) what does "this" refer to? (2) how to write a constructor, and (3) how to define functions on objects.

If you're just scripting mouse events on a web page, you won't need much of this, but it's handy if you're doing anything serious with javascript (like, writing an image editor, ahem).



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