To add elements of an array

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

// Adding a New Element to an Array 
arr.push("Hola");

// When adding multiple elements to an array 
arr.push("Salut", "Hey");

// Output all elements of an array 
for (var i = 0; i < arr.length; i++) {
    console.log(arr[i]);
}

Hi
Hello
Bonjour
Hola 
Salut
Hey