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Professional JavaScript for Web Developers - Fourth Edition

You're reading from  Professional JavaScript for Web Developers - Fourth Edition

Product type Book
Published in Nov 2019
Publisher Wiley
ISBN-13 9781119366447
Pages 1144 pages
Edition 4th Edition
Languages
Author (1):
Matt Frisbie Matt Frisbie
Profile icon Matt Frisbie

Table of Contents (37) Chapters

COVER
FOREWORD
INTRODUCTION 1 What Is JavaScript? 2 JavaScript in HTML 3 Language Basics 4 Variables, Scope, and Memory 5 Basic Reference Types 6 Collection Reference Types 7 Iterators and Generators 8 Objects, Classes, and Object-Oriented Programming 9 Proxies and Reflect 10 Functions 11 Promises and Async Functions 12 The Browser Object Model 13 Client Detection 14 The Document Object Model 15 DOM Extensions 16 DOM Levels 2 and 3 17 Events 18 Animation and Graphics with Canvas 19 Scripting Forms 20 JavaScript APIs 21 Error Handling and Debugging 22 XML in JavaScript 23 JSON 24 Network Requests and Remote Resources 25 Client-Side Storage 26 Modules 27 Workers 28 Best Practices A ES2018 and ES2019 B Strict Mode C JavaScript Libraries and Frameworks D JavaScript Tools INDEX
END USER LICENSE AGREEMENT

THE DATE TYPE

The ECMAScript Date type is based on an early version of java.util.Date from Java. As such, the Date type stores dates as the number of milliseconds that have passed since midnight on January 1, 1970 UTC (Universal Time Code). Using this data storage format, the Date type can accurately represent dates 285,616 years before or after January 1, 1970.

To create a date object, use the new operator along with the Date constructor, like this:

let now = new Date();

When the Date constructor is used without any arguments, the created object is assigned the current date and time. To create a date based on another date or time, you must pass in the millisecond representation of the date (the number of milliseconds after midnight, January 1, 1970 UTC, the Unix epoch). To aid in this process, ECMAScript provides two methods: Date.parse() and Date.UTC().

The Date.parse() method accepts a string argument representing a date. It attempts to convert the string into a millisecond representation...

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