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javascript push item to beginning of array Code Example
javascript push item to beginning of array 
var colors = ["white","blue"];
colors.unshift("red"); //add red to beginning of colors
// colors = ["red","white","blue"]
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]
Source: developer.mozilla.org
insert element at beginning of array javascript 
// Use unshift method if you don't mind mutating issue
// If you want to avoid mutating issue
const array = [3, 2, 1]

const newFirstElement = 4

const newArray = [newFirstElement].concat(array) // [ 4, 3, 2, 1 ]

console.log(newArray);
Source: stackoverflow.com



Javascript

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 Code Example
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 Coding
Sub Category:
 Code Example
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