ECMAScript 2016

New Features in JavaScript 2016

Supported in all modern browsers since March 2017.

Browser Support

JavaScript 2016 is supported in all modern browsers since March 2017:

ES 2016 is not supported in Internet Explorer.

Exponentiation Operator

The exponentiation operator (**) raises the first operand to the power of the second operand.

Example

let x = 5;

let z = x ** 2;

x ** y produces the same result as Math.pow(x, y):

Example

let x = 5;

let z = Math.pow(x,2);

Exponentiation Assignment

The exponentiation assignment operator (**=) raises the value of a variable to the power of the right operand.

Example

let x = 5;

x **= 2;

JavaScript Array includes()

ECMAScript 2016 introduced Array.includes to arrays.

This allows us to check if an element is present in an array:

Example

const fruits = ["Banana", "Orange", "Apple", "Mango"];

fruits.includes("Mango");