Make your JavaScript apps smoother

This article first appeared in issue 231 of .net magazine – the world's best-selling magazine for web designers and developers.

Modern web applications often involve real-time animation and interactivity – anything from simple roll-over effects, Flash-like banners and animations implemented in HTML5 to complete games. JavaScript is faster than ever thanks to modern JIT compilers in browsers, but there’s still one problem: garbage collection (GC). This can cause pauses, stuttering and poor performance, ruining the smooth real-time experience.

But what is garbage collection? JavaScript enables you to easily create objects. However, there’s no way to delete a given object (the delete operator doesn’t count: it’s for removing properties on objects). Instead, objects are deleted automatically when no longer used.

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