How to append something to an array?

tl;dr

Here's how to append values to the end of an array in JavaScript:

First, let's initialize an array with some values:

// initialize array
var arr = ["Hi", "Hello", "Bonjour"];

Now, we can use the Array.prototype.push method to append values to the end of the array:

// append new value to the array
arr.push("Hola");

console.log(arr); // ["Hi", "Hello", "Bonjour", "Hola"]

We can also use the push() function to append more than one value to an array in a single call:

// initialize array
var arr = ["Hi", "Hello", "Bonjour", "Hola"];

// append multiple values to the array
arr.push("Salut", "Hey");

// display all values
for (var i = 0; i < arr.length; i++) {
  console.log(arr[i]);
}