w3schools declare empty javascript array code example

Example 1: javascript empty array

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

Example 2: empty array js

let list = [1, 2, 3, 4];
function empty() {
    //empty your array
    list.length = 0;
}
empty();

Example 3: javascript empty array

var arr1 = ['a','b','c','d','e','f'];
var arr2 = arr1;  // Reference arr1 by another variable 
arr1 = [];
console.log(arr2); // Output ['a','b','c','d','e','f']