Ptt 大爆卦 | Js array get first - 前往 https://gomakethings.com/how-to-get-the-index-of-an-object-in-an-array-with-vanilla-js/

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How to get the index of an object in an array with vanilla JS

The Array.indexOf() method returns the index of the first matching item in an array (or -1 if it doesn't exist). var wizards = ['Gandalf', ...

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