JAVASCRIPT

js add element to front of array

//Add element to front of array
var numbers = ["2", "3", "4", "5"];
numbers.unshift("1");
//Result - numbers: ["1", "2", "3", "4", "5"]

javascript array add front

// example:
let yourArray = [2, 3, 4];
yourArray.unshift(1); // yourArray = [1, 2, 3, 4]

// syntax:
// <array-name>.unshift(<value-to-add>);

how add an element on an array in the beginning on js

In JavaScript, you use the unshift() method 
to add one or more elements to the beginning 
of an array and it returns the array's 
length after the new elements have been added.


example:

var colors = ['white', 'blue'];

colors.unshift('red'); 
console.log(colors);

// colors = ['red', 'white', 'blue']

var numbers = [2, 3, 4, 5];
numbers.unshift(1);

console.log(numbers);
//  numbers: [ 1, 2, 3, 4, 5 ]

How can I add new array elements at the beginning of an array in JavaScript?

var arr = [23, 45, 12, 67];
arr = [34, ...arr]; // RESULT : [34,23, 45, 12, 67]

console.log(arr)