How to use the copyWithin () method in JavaScript

This article will explain in detail how to use the copyWithin () method in JavaScript. The editor thinks it is very practical, so I share it with you as a reference. I hope you can get something after reading this article.

CopyWithin ()

CopyWithin () overwrites a portion of the data from the array to another location in the array. The array is modified, but not the length of the array.

Var str1 = [1 str1.copyWithin (2)) / / all elements after index 3 are omitted, all elements after index 3 are omitted, all elements after index 3 are copied and replaced by console.log from index 1 to 1 (excluding end position). / [1, 4, 5, 6, 5, 6] this is the end of the article on "how to use the copyWithin () method in JavaScript". I hope the above content can be helpful to you, so that you can learn more knowledge. if you think the article is good, please share it for more people to see.