how to empty an array JS code example

Example 1: 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 2: javascript clear array

let aray = [1,2,3,4,5,6,7,8,9,10];

//as with most coding there are several ways you can do anything
//see whichever works best for your scenario

//set the array to equal a blank array
array = [];

//set the array's length to 0
array.length = 0;

//using splice, starts at index 0 & removes everything up to and including that last index 
array.splice(0, array.length);

//map or loop through and shift() or pop();
//goes through the array one at a time and removes the last item each time
array.map( () => array.pop());

//goes through the array one at a time and removes the first item each time
array.map( () => array.shift());

Example 3: create empty array javascript

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

Example 4: generate empty array js

Array.from({length: 500})

// change the length to whatever value you want

Example 5: empty array js

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

Example 6: 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']