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This article is about how JavaScript implements array truncation. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

Array truncation

This tip is mainly used to lock the size of the array, which is very useful if it is used to delete some elements in the array. For example, if your array has 10 elements, but you only want the first five elements, you can truncate the array through array.length=5. Such as the following example:

Var array = [1 array.length; / 6 array.length = 3; console.log (array.length); / / 3 console.log (array); / / Thank you for reading! This is the end of the article on "how to achieve array truncation 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 for more people to see!

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