empty an array in js 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: javascript empty array

var colors = ["red","blue","green"];
    colors = []; //empty the array

Example 3: javascript empty array

arr = [];   // set array=[]

//function
const empty = arr => arr.length = 0;
//example
var arr= [1,2,3,4,5];
empty(arr) // arr=[]

Example 4: create empty array javascript

const myArray1 = []
// or...
const myArray2 = new Array()

Example 5: js delete all array items

A.splice(0,A.length)

Example 6: javascript empty array

if (array === undefined || array.length == 0) {
    // array empty or does not exist
}