crear empty items from array javascript code example

Example 1: Javascript remove empty elements from array

var colors=["red","blue",,null,undefined,,"green"];

//remove null and undefined elements from colors
var realColors = colors.filter(function (e) {return e != null;});
console.log(realColors);

Example 2: generate empty array js

Array.from({length: 500})

// change the length to whatever value you want

Example 3: create an empty array js

let arrayName = [];