Answers for "js push in first position"

javascript add new array element to start of array

var colors = ["white","blue"];
colors.unshift("red"); //add red to beginning of colors
// colors = ["red","white","blue"]

javascript push to first index

var fruits = ["Banana", "Orange", "Apple", "Mango"];
fruits.unshift("Lemon","Pineapple");

push element to array to first place js

let arr = [4, 5, 6]

arr.unshift(1, 2, 3)
console.log(arr);
// [1, 2, 3, 4, 5, 6]

.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) ;