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This article is about how to use the Array.forEach method and the unfold operator to copy arrays in JavaScript. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

Use the Array.forEach method and the expansion operator const numbers = [1,2,3,4,5]; let copy = []; numbers.forEach ((value) = > copy.push (value)); copy.push (6); / / add a new entry to prove that the original array console.log (copy); console.log (numbers) will not be modified / / output / / [1, 2, 3, 4, 5, 6] / [1, 2, 3, 4, 5] Thank you for reading! This is the end of the article on "how to use the Array.forEach method and expand the operator copy array in JavaScript". I hope the above content can be of some help to you, so that you can learn more knowledge. if you think the article is good, you can share it out for more people to see!

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