A = [];. This code will set the variable A to a new empty array. This is perfect if you don't have references to the ... ... <看更多>

The second way to empty an array is to set its length to zero: a.length = 0;. The length property is read/write property of an Array object. ... <看更多>

Instantly share code, notes, and snippets. @pauldcomanici · pauldcomanici/empty-array.js. Created ... ... <看更多>

How to empty an array in JavaScriptIn JavaScript, there are multiple ways available to remove all elements ... ... <看更多>

In practice it will depend on the JavaScript executor how it handles it. The check should effectively be done by the forEach as it has to ... ... <看更多>