Array
The JavaScript Array object is a global that is used in theconstruction of arrays;
which are high-livel, list-like objects.
Create an Array
var fruits = ['Apple', 'Banana'];
Access(index into)an Array item
var first = fruits[0];
var last = fruits[fruits.length - 1];
Loop over an Array
fruits.forEach(function(item, index, array) {
console.log(item, index);
});
//Apple 0 Banana 1
Add to the end of an Array
var newLength = fruits.push('Orange');
// ['Apple', 'Banana', 'Orange']
Remove from the end of an Array
var last = fruits.pop(); // remove Orange(form the end)
Remove from the front of an Array
var first = fruits.shift(); // remove Apple from the front
Add to the front of an Array
var newLength = fruits.unshift('Strawberry') // add to the front
Find the index of an item in the Array
fruits.push('Mango'); // ['Strawberry', 'Banana', 'Mango']
var pos = fruits.indexOf('Banana'); // [1]