— Ive had some discussion recently.. https://github.com/gkz/LiveScript/issues/1070
Some time ago I read an article about jsperf not being a reliable way to compare/check js performance.When I find ill post it here.
— Ye, okay, will be good
— Why is getElementsByClassName more performant than querySelectorAll according to jsperf. Isnt it supposed to be the other way around?
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— I dont know, maybe it's a wrapper for querySelectorAll. depends on how browser-makers implemented it.
— It doesnt matter if you dont do any engine or lib..
— A node list is static a htmlcollection is live. I'm pretty sure querySelector should be faster
— What is callback. Fonction ??
— A callback is a function you pass as a parameter to another function which will call your callback function after it's done
— Or after some condition
— But why do that ?