Ptt 大爆卦 | join js - 前往 https://stackoverflow.com/questions/15069587/is-there-a-way-to-join-the-elements-in-an-js-array-but-let-the-last-separator-b

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Is there a way to join the elements in an js array, but let the last ...

There's no predefined function, because it's quite simple. var a = ['a', 'b', 'c']; var str = a.slice(0, -1).join(',')+' or '+a.slice(-1);.

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