Is the double asterisk ** a valid JavaScript operator?

Question

I solved a kata on CodeWars and was looking through some of the other solutions when I came across the double asterisk to signify to the power of. I have done some research

Answer 1

** operator is a valid operator in ES7. It holds the same meaning as Math.pow(x,y) For example, 2**3 is same as Math.pow(2,3)

Here are the details from Wikipedia.

Two new features added in ES7:

the exponentiation operator (**) and Array.prototype.includes

https://en.wikipedia.org/wiki/ECMAScript#cite_ref-ES2016_12-1

You can play with this in this Babel Live compiler