ECMAScript 2016
New Features in JavaScript 2016
This chapter introduces the new features in ECMAScript 2016:
- JavaScript Exponentiation (**)
- JavaScript Exponentiation assignment (**=)
- JavaScript Array includes()
Browser Support
JavaScript 2016 (ES7) is fully supported in all modern browsers since March 2017:
| Chrome 52 | Edge 15 | Firefox 52 | Safari 10.1 | Opera 39 |
| Jul 2016 | Apr 2017 | Mar 2017 | May 2017 | Aug 2016 |
ES 2016 is not supported in Internet Explorer.
Exponentiation Operator
The exponentiation operator (**) raises the first operand to the power of the second operand.
x ** y produces the same result as Math.pow(x, y):
Exponentiation Assignment
The exponentiation assignment operator (**=) raises the value of a variable to the power of the right operand.
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");
Try it Yourself »
