Book Image

Learning JavaScript Data Structures and Algorithms - Second Edition

By : Loiane Groner
Book Image

Learning JavaScript Data Structures and Algorithms - Second Edition

By: Loiane Groner

Overview of this book

This book begins by covering basics of the JavaScript language and introducing ECMAScript 7, before gradually moving on to the current implementations of ECMAScript 6. You will gain an in-depth knowledge of how hash tables and set data structure functions, as well as how trees and hash maps can be used to search files in a HD or represent a database. This book is an accessible route deeper into JavaScript. Graphs being one of the most complex data structures you’ll encounter, we’ll also give you a better understanding of why and how graphs are largely used in GPS navigation systems in social networks. Toward the end of the book, you’ll discover how all the theories presented by this book can be applied in real-world solutions while working on your own computer networks and Facebook searches.
Table of Contents (18 chapters)
Learning JavaScript Data Structures and Algorithms - Second Edition
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface

The TypedArray class


We can store any data type in JavaScript arrays. This is because JavaScript arrays are not strongly typed as in other languages such as C and Java.

TypeArray was created so that we could work with arrays with a single datatype. Its syntax is let myArray = new TypedArray(length), where TypedArray needs to be replaced with one TypedArray class, as specified in the following table:

TypedArray

Description

Int8Array

8-bit twos complement signed integer

Uint8Array

8-bit unsigned integer

Uint8ClampedArray

8-bit unsigned integer

Int16Array

16-bit twos complement signed integer

Uint16Array

16-bit unsigned integer

Int32Array

32-bit twos complement signed integer

Uint32Array

32-bit unsigned integer

Float32Array

32-bit IEEE floating point number

Float64Array

64-bit IEEE floating point number

The following is an example:

let length = 5; 
let int16 = new Int16Array(length); 
 
let array16 = []; 
array16.length = length; ...