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Learning JavaScript Data Structures and Algorithms - Third Edition
book

Learning JavaScript Data Structures and Algorithms - Third Edition

by Loiane Avancini
April 2018
Beginner to intermediate content levelBeginner to intermediate
426 pages
10h 19m
English
Packt Publishing
Content preview from Learning JavaScript Data Structures and Algorithms - Third Edition

Enhanced object properties

ES6 introduces a concept called array destructuring, which is a way of initializing variables at once. For example, consider the following:

let [x, y] = ['a', 'b']; 

Executing the preceding code is the same as doing the following:

let x = 'a'; 
let y = 'b'; 

Array destructuring can also be performed to swap values at once without the need to create temp variables, as follows:

[x, y] = [y, x]; 

The preceding code is the same as the following one:

var temp = x;  
x = y; 
y = temp; 

This will be very useful when you learn sorting algorithms as these swap values are very common.

There is also another functionality, called property shorthand, which is another way of destructuring objects. For example, consider the following ...

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Learning JavaScript Data Structures and Algorithms

Learning JavaScript Data Structures and Algorithms

Loiane Avancini

Publisher Resources

ISBN: 9781788623872Supplemental Content