insert data in array 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: js add to array

let arr = [1, 2, 3, 4];

arr = [...arr, 5, 6, 7];

console.log(arr);