What is unshift method in JavaScript?

[hp-singh-53e2639c (Harjas Preet Singh)]

What is unshift method in JavaScript?

[sakshi-srivastava-f3c2a4a4 (Sakshi Srivastava)]

Unshift method in JavaScript works on array to adds one or more elements to the beginning of the array and returns the new length of the array.

It is not a pure function as it changes the length of the array directly.

syntax: array.unshift(item1, item2, …, itemX)