[porker]

> With modern JavaScript you can easily cast a NodeList to an Array, e.g.

Ah, thanks. I got bitten by this recently and didn't know what to do with this "thing that's not an array but seems like it should be, and doesn't always behave like one"

[nicoburns]

FYI the reason it's not an array is because if you store a reference to it, it will stay up to date as and when the DOM changes.

[jarek-foksa]

The NodeList returned by querySelectorAll() is not live. There is really no reason for it to return a NodeList other than backward compatibility.

[spiralx]

Before that ES2015 allowed you to do Array.from(nodeList, mapFunc?) which I still use due to the optional mapping function e.g. Array.from(document.querySelectorAll('a'), a => a.href)