unshift() javaascript code example
Example 1: array.unshift in javascript
//The unshift() method adds one or more elements to the beginning of an array
//and returns the new length of the array.
const array1 = [1, 2, 3];
console.log(array1.unshift(4, 5));
// expected output: 5
console.log(array1);
// expected output: Array [4, 5, 1, 2, 3]
Example 2: .unshift
let monTableau = ['un', 'deux','trois', 'quatre'] ;
monTableau.unshift('zero') ;
//console.log(monTableau) ;
let monTableau2D = [
['Mark' , 'jeff' , 'Bill'] ,
['Zuckerberg' , 'Bezos' , 'Gates']
] ;
monTableau2D[1].unshift('test') ;
//console.log(monTableau2D) ;