February 2018
Intermediate to advanced
298 pages
8h 22m
English
Content preview from Learn ECMAScript - Second Edition
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Default values for variables
While destructuring, you can also provide default values for the variables if an array index is undefined. The following example demonstrates this:
let [a, b, c = 3] = [1, 2];
console.log(c); //Output "3"
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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.