append numbers in javascript list 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: javascript append to array

arr = [1, 2, 3, 4]
arr.push(5) // adds element to end

arr.unshift(0) // adds element to beginning