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Editor to share with you how JavaScript uses length to truncate an array. I hope you will get something after reading this article. Let's discuss it together.

Use length to truncate an array

Similar to the way we emptied the array above, we use the length attribute to truncate an array.

Var myArray = [12,222,124,98,10]; myArray.length = 4; / / myArray will be equal to [12,222,124,124].

In addition, if you set the length of an array to a larger value than it is now, the length of the array will be changed and the item complement of the new undefined will be added. The length of the array is not a read-only property.

MyArray.length = 10; / the new array length is 10myArray [myArray.length-1]; / / undefined has finished reading this article, I believe you have some understanding of "how JavaScript uses length to truncate an array". If you want to know more about it, welcome to follow the industry information channel, thank you for reading!

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