Profiling CSS for fun and profit — Perfection Kills
I’ve been recently working on optimizing performance of a so-called one-page web app. The application was highly dynamic, interactive, and was heavily stuffed with new CSS3 goodness. I’m not talking just border-radius and gradients. It was a full stack of shadows, gradients, transforms, sprinkled with transitions, smooth half-transparent colors, clever pseudo-element -based CSS tricks, and experim
Understanding delete — Perfection Kills
Theory Type of code Execution context Activation object / Variable object Property attributes Built-ins and DontDelete Undeclared assignments Firebug confusion Deleting variables via eval Browsers compliance Gecko DontDelete bug IE bugs Misconceptions `delete` and host objects ES5 strict mode Summary A couple of weeks ago, I had a chance to glance through Stoyan Stefanov’s Object-Oriented Javascri
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Javascript quiz — Perfection Kills
