Write a function that converts a hexadecimal color, for example blue (
#0000FF), into its RGB representation,rgb(0, 0, 255). Name your functiongetRGB()and test it with the following code (hint: treat the string as an array of characters):> var a = getRGB("#00FF00"); > a; "rgb(0, 255, 0)"What do each of these following lines print in the console?
> parseInt(1e1); > parseInt('1e1'); > parseFloat('1e1'); > isFinite(0/10); > isFinite(20/0); > isNaN(parseInt(NaN));What does this following code alert?
var a = 1; function f() { function n() { alert(a); } var a = 2; n(); } f();All these following examples alert
"Boo!". Can you explain why?Example 1:
var f = alert; eval...
Object-Oriented JavaScript - Third Edition
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Object-Oriented JavaScript - Third Edition
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Overview of this book
JavaScript is an object-oriented programming language that is used for website development. Web pages developed today currently follow a paradigm that has three clearly distinguishable parts: content (HTML), presentation (CSS), and behavior (JavaScript). JavaScript is one important pillar in this paradigm, and is responsible for the running of the web pages.
This book will take your JavaScript skills to a new level of sophistication and get you prepared for your journey through professional web development. Updated for ES6, this book covers everything you will need to unleash the power of object-oriented programming in JavaScript while building professional web applications. The book begins with the basics of object-oriented programming in JavaScript and then gradually progresses to cover functions, objects, and prototypes, and how these concepts can be used to make your programs cleaner, more maintainable, faster, and compatible with other programs/libraries.
By the end of the book, you will have learned how to incorporate object-oriented programming in your web development workflow to build professional JavaScript applications.
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Current Title:
Object-Oriented JavaScript - Third Edition
Table of Contents (25 chapters)
Object-Oriented JavaScript - Third Edition
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface
Free Chapter
Object-Oriented JavaScript
Primitive Data Types, Arrays, Loops, and Conditions
Functions
Objects
ES6 Iterators and Generators
Prototype
Inheritance
Classes and Modules
Promises and Proxies
The Browser Environment
Coding and Design Patterns
Testing and Debugging
Reactive Programming and React
Reserved Words
Built-in Functions
Built-in Objects
Regular Expressions
Customer Reviews