Answers for "insert on first element js"

2

javascript append how first element

// 2018+ Version
parentElement.prepend(newFirstChild)
Posted by: Guest on July-26-2020
2

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);
Posted by: Guest on November-20-2020

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