How JavaScript adjusts / empties arrays using length

Editor to share with you how JavaScript uses length to adjust / empty arrays, I believe most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

Adjust / empty the array using length

We basically covered the length of the array.

If we want to resize the array:

Var entries = [1,2,3,4,5,6,7]; console.log (entries.length); / / 7 entries.length = 4; console.log (entries.length); / / 4 console.log (entries); / / [1,2,3,4]

If we want to empty the array:

Var entries = [1,2,3,4,5,6,7]; console.log (entries.length); / / 7 entries.length = 0; console.log (entries.length); / / 0 console.log (entries) / / [] what is JavaScript? JavaScript is a literal scripting language whose interpreter is called JavaScript engine and is part of the browser. JavaScript is a scripting language widely used on the client side. It was first used on HTML pages to add dynamic functions to HTML pages.

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