The JavaScript Comma Operator

(на русском, 日本)
 
Let’s begin with a funny tweet:

The ‘c’ at the end is for the lowly comma operator. Last in the line of operator precedence and rarely documented, the comma operator hides its light under a bushel. It may not be a JavaScript heavy-hitter but I like it anyway. Its simple, elegant and you should make it your friend. So, here we go – more than you’ll ever need to know about JavaScript’s bashful hero:

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How evil is eval?

“eval is Evil: The eval function is the most misused feature of JavaScript. Avoid it”

Douglas Crockford in JavaScript: The Good Parts

I like The Good Parts. It’s essential reading for anyone who’s serious about JavaScript – and I realize that Crockford’s goal here is to emphasize only what he likes – but still I think that such a brief yet total rejection might send the wrong message.