June 2016
Beginner
248 pages
5h 18m
English
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Introducing ECMAScript 2016
As mentioned earlier in this chapter, ECMAScript 2016 is a small release with only a couple of new features. These are an includes method for arrays and the exponentation operator **.
You can write myArray.includes(value) instead of myArray.indexOf(value) !== -1. Note that these expressions are not quite equivalent. You can use includes to check for the value NaN within an array, which you can't do with indexOf.
The exponential operator allows you to rewrite Math.pow(coefficient, exponent) as coefficient ** exponent.
You can also combine it with an assignment, as in myVariable **= 2.
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.