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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

Using the @@iterator object

The Array class also has a property named @@iterator that was introduced in ES2015. To use this, we need to access the Symbol.iterator property of the array as follows:

let iterator = numbers[Symbol.iterator](); 
console.log(iterator.next().value); // 1 
console.log(iterator.next().value); // 2 
console.log(iterator.next().value); // 3 
console.log(iterator.next().value); // 4 
console.log(iterator.next().value); // 5 

Then, we can individually call the next method of the iterator to retrieve the next value of the array. For the numbers array, we need to call the iterator.next().value 15 times because we have 15 values in the array.

We can output all 15 values from the numbers array using the following code:

iterator ...
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Learning JavaScript Data Structures and Algorithms

Learning JavaScript Data Structures and Algorithms

Loiane Avancini

Publisher Resources

ISBN: 9781788623872Supplemental Content