Title 20_Eloquent Javascript 2018.pdf ✅

Eloquent JavaScript 3rd edition Marijn Haverbeke
Copyright © 2018 by Marijn Haverbeke This work is licensed under a Creative Commons attribution-noncommercial license (http://creativecommons.org/licenses/by-nc/3.0/). All code in the book may also be considered licensed under an MIT license (https: //eloquentjavascript.net/code/LICENSE). The illustrations are contributed by various artists: Cover and chap- ter illustrations by Madalina Tantareanu. Pixel art in Chapters 7 and 16 by Antonio Perdomo Pastor. Regular expression diagrams in Chap- ter 9 generated with regexper.com by Jeff Avallone. Village photograph in Chapter 11 by Fabrice Creuzot. Game concept for Chapter 16 by Thomas Palef. The third edition of Eloquent JavaScript was made possible by 325 financial backers. You can buy a print version of this book, with an extra bonus chapter in- cluded, printed by No Starch Press at http://a-fwd.com/com=marijhaver- 20&asin-com=1593279507. i
Contents Introduction 1 On programming . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Why language matters . . . . . . . . . . . . . . . . . . . . . . . 4 What is JavaScript? . . . . . . . . . . . . . . . . . . . . . . . . . 8 Code, and what to do with it . . . . . . . . . . . . . . . . . . . 11 Overview of this book . . . . . . . . . . . . . . . . . . . . . . . . 12 Typographic conventions . . . . . . . . . . . . . . . . . . . . . . 13 1 Values, Types, and Operators 15 Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Strings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Unary operators . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Boolean values . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Empty values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Automatic type conversion . . . . . . . . . . . . . . . . . . . . . 28 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 ii