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Interesting article, I like some of the points the author makes. I did want to bring up use for(var i=0; i<10; i++) rather than a for .. in loop. But isn't a fo

by lcfcjs 12y ago

Interesting article, I like some of the points the author makes. I did want to bring up use for(var i=0; i<10; i++) rather than a for .. in loop. But isn't a for in loop for objects, while the first for example is only for arrays? I don't think you can reference an object's keys with an incrementing counter (unless the object is specifically designed like this?

joewrong 12y ago
I suppose you could use the first example with Object.keys ... var keys = Object.keys(myObj); for (var i = 0; i < keys.length; i++) { myObj[keys[i]]; }
- torkable 12y ago
  Object.keys is incredibly slow and you should never use it, for in loops are far quicker.