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This article mainly shows you "how JavaScript uses filter ()". The content is simple and clear. I hope it can help you solve your doubts. Let the editor lead you to study and learn this article "how JavaScript uses filter ()".

Filter ()

The filter method is also used to traverse an array, which, as the name implies, filters the array, triggers a callback function after each element, determines, retains or removes the current item, and finally returns a new array, such as:

Let arr4 = [1,2,3,4,5]; let newArr4 = arr4.filter ((e, I) = > e% 2 = 0); / / take the module, filter the number console.log (newArr4) whose remainder is not zero; / / [2ju 4] above are all the contents of the article "how JavaScript uses filter ()". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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