how to insert element in array in js code example

Example 1: javascript pushing to an array

some_array = ["John", "Sally"];
some_array.push("Mike");

console.log(some_array); //output will be =>
["John", "Sally", "Mike"]

Example 2: insert item into array specific index javascript

myArray.splice(index, 0, item);

Example 3: array insertion javascript

Array.prototype.insert = function ( index, item ) {
    this.splice( index, 0, item );
};