JavaScript from Beginner to Professional, Edition 2021 (PDF)

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About the book:

Publisher: Packt Publishing

Author (s): , Ray Tricker, Samantha Alford

Pages: 702

Edition: 2021

Language: English

Size: 5 Mb

Content:

Preface

Who this book is for

What this book covers

To get the most out of this book

Get in touch

1. Getting Started with JavaScript

Why should you learn JavaScript?

Setting up your environment

Integrated Development Environment

Web browser

Extra tools

Online editor

How does the browser understand JavaScript?

Using the browser console

Practice exercise 1.1

Adding JavaScript to a web page

Directly in HTML

Practice exercise 1.2

Linking an external file to our web page

Practice exercise 1.3

Writing JavaScript code

Formatting code

Indentations and whitespace

Semicolons

Code comments

Practice exercise 1.4

Prompt

Random numbers

Chapter project

Creating an HTML file and a linked JavaScript file

Self-check quiz

Summary

2. JavaScript Essentials

Variables

Declaring variables let, var, and const

Naming variables

Primitive data types

String

Escape characters

Number

BigInt

Boolean

Symbol

Undefined null

Analyzing and modifying data types

Working out the type of a variable

Converting data types

Practice exercise 2.1

Operators

Arithmetic operators

Addition

Subtraction

Multiplication

Division

Exponentiation

Modulus

Unary operators: increment and decrement

Combining the operators

Practice exercise 2.3

Assignment operators

Practice exercise 2.4

Comparison operators

Equal

Not equal

Greater than and smaller than

Logical operators

And

Or

Not

Chapter project

Miles-to-kilometers converter

BMI calculator

Self-check quiz

Summary

3. JavaScript Multiple Values

Arrays and their properties

Creating arrays

Accessing elements

Overwriting elements

Built-in length property

Practice exercise 3.1

Array methods

Adding and replacing elements

Deleting elements

Finding elements

Sorting

Reversing

Practice exercise 3.2

Multidimensional arrays

Practice exercise 3.3

Objects in JavaScript

Updating objects

Practice exercise 3.4

Working with objects and arrays

Objects in objects

Arrays in objects

Objects in arrays

Objects in arrays in objects

Practice exercise 3.5

Chapter projects

Manipulating an array

Company product catalog

Self-check quiz

Summary

4. Logic Statements

if and if else statements

Practice exercise 4.1

Practice exercise 4.2

Conditional ternary operators

Practice exercise 4.3

switch statements

The default case

Practice exercise 4.4

Combining cases

Practice exercise 4.5

Chapter projects

Evaluating a number game

Friend checker game

Rock Paper Scissors game

Self-check quiz

Summary

5. Loops

while loops

Practice exercise 5.1

do while loops

Practice exercise 5.2

for loops

Practice exercise 5.3

Nested loops

Practice exercise 5.4

Loops and arrays

Practice exercise 5.5

for of loop

Practice exercise 5.6

Loops and objects

for in loop

Practice exercise 5.7

Looping over objects by converting to an array

break and continue

break

continue

Practice exercise 5.8

break, continue, and nested loops

break and continue and labeled blocks

Chapter project

Math multiplication table

Self-check quiz

Summary

6. Functions

Basic functions

Invoking functions

Writing functions

Naming functions

Practice exercise 6.1

Practice exercise 6.2

Parameters and arguments

Practice exercise 6.3

Default or unsuitable parameters

Special functions and operators

Arrow functions

Spread operator

Rest parameter

Returning function values

Practice exercise 6.4

Returning with arrow functions

Variable scope in functions

Local variables in functions

let versus var variables

const scope

Global variables

Immediately invoked function expression

Practice exercise 6.5

Recursive functions

Practice exercise 6.6

Nested functions

Practice exercise 6.7

Anonymous functions

Practice exercise 6.8

Function callbacks

Chapter projects

Create a recursive function

Set timeout order

Self-check quiz

Summary

7. Classes

Object-oriented programming

Classes and objects

Classes

Constructors

Practice exercise 7.1

Methods

Practice exercise 7.2

Properties

Getters and setters

Inheritance

Prototypes

Practice exercise 7.3

Chapter projects

Employee tracking app

Menu items price calculator

Self-check quiz

Summary

8. Built-In JavaScript Methods

Introduction to built-in JavaScript methods

Global methods

Decoding and encoding URIs

decodeUri() and encodeUri()

decodeUriComponent() and

encodeUriComponent()

Encoding with escape() and unescape()

Practice exercise 8.1

Parsing numbers

Making integers with parseInt()

Making floats with parseFloat()

Executing JavaScript with eval()

Array methods

Performing a certain action for every item

Array methods

Performing a certain action for every item

Filtering an array

Checking a condition for all elements

Replacing part of an array with another part of the

array

Mapping the values of an array

Finding the last occurrence in an array

Practice exercise 8.2

Practice exercise 8.3

String methods

Combining strings

Converting a string to an array

Converting an array to a string

Working with index and positions

Creating substrings

Replacing parts of the string

Uppercase and lowercase

The start and end of a string

Practice exercise 8.4

Practice exercise 8.5

Number methods

Checking if something is (not) a number

Checking if something is finite

Checking if something is an integer

Specifying a number of decimals

Specifying precision

Math methods

Finding the highest and lowest number

Square root and raising to the power of

Turning decimals into integers

Exponent and logarithm

Practice exercise 8.6

Date methods

Creating dates

Methods to get and set the elements of a date

Parsing dates

Converting a date to a string

Practice exercise 8.7

Chapter projects

Word scrambler

Countdown timer

Self-check quiz

Summary

9. The Document Object Model

HTML crash course

HTML elements

HTML attributes

The BOM

Practice exercise 9.1

Window history object

Window navigator object

Window location object

Practice exercise 9.2

The DOM

Additional DOM properties

Selecting page elements

Practice exercise 9.3

Chapter project

Manipulating HTML elements with JavaScript

Self-check quiz

Summary

10. Dynamic Element Manipulation Using the DOM

Basic DOM traversing

Practice exercise 10.1

Selecting elements as objects

Changing innerText

Changing innerHTML

Accessing elements in the DOM

Accessing elements by ID

Practice exercise 10.2

Accessing elements by tag name

Practice exercise 10.3

Accessing elements by class name

Practice exercise 10.4

Accessing elements with a CSS selector

Using querySelector()

Using querySelectorAll()

Element click handler

This and the DOM

Practice exercise 10.7

Manipulating element style

Changing the classes of an element

Adding classes to elements

Removing classes from elements

Toggling classes

Manipulating attributes

Practice exercise 10.8

Event listeners on elements

Practice exercise 10.9

Creating new elements

Practice exercise 10.10

Chapter projects

Collapsible accordion component

Interactive voting system

Hangman game

Self-check quiz

Summary

11. Interactive Content and Event Listeners

Introducing interactive content

Specifying events

Specifying events with HTML

Specifying events with JavaScript

Practice exercise 11.1

Specifying events with event listeners

Practice exercise 11.2

The onload event handler

Practice exercise 11.3

Mouse event handlers

Practice exercise 11.4

The event target property

Practice exercise 11.5

DOM event flow

Practice exercise 11.6

onchange and onblur

Practice exercise 11.7

Key event handler

Practice exercise 11.8

Drag and drop elements

Practice exercise 11.9

Form submission

Practice exercise 11.10

Animating elements

Practice exercise 11.11

Chapter projects

Build your own analytics

Star rating system

Mouse position tracker

Box clicker speed test game

Self-check quiz

Summary

12. Intermediate JavaScript

Regular expressions

Specifying multiple options for words

Character options

Groups

Practical regex

Searching and replacing strings

Email validation

Functions and the arguments object

Practice exercise 12.3

JavaScript hoisting

Using strict mode

Debugging

Breakpoints

Practice exercise 12.4

Error handling

Practice exercise 12.5

Using cookies

Practice exercise 12.6

Local storage

Practice exercise 12.7

JSON

Practice exercise 12.8

Parsing JSON

Practice exercise 12.9

Practice exercise 12.9 answers

Chapter projects

Email extractor

Form validator

Simple math quiz

Self-check quiz

Summary

13. Concurrency

Introducing concurrency

Callbacks

Practice exercise 13.1

Promises

Practice exercise 13.2

async and await

Practice exercise 13.3

Event loop

Call stack and callback queue

Chapter project

Password checker

Self-check quiz

Summary

14. HTML5, Canvas, and JavaScript

Introducing HTML5 with JavaScript

Local file reader

Uploading files

Reading files

Practice exercise 14.1

Getting position data with GeoLocation

HTML5 canvas

Practice exercise 14.2

Dynamic canvas

Adding lines and circles to the canvas

Practice exercise 14.3

Adding text to the canvas

Practice exercise 14.4

Adding and uploading images to the canvas

Practice exercise 14.5

Adding animations to the canvas

Practice exercise 14.6

Drawing on canvas with a mouse

Practice exercise 14.7

Saving dynamic images

Media on the page

Digital accessibility in HTML

Chapter projects

Create a Matrix effect

Countdown clock

Online paint app

Self-check quiz

Summary

15. Next Steps

Libraries and frameworks

Libraries

jQuery

D3

Underscore

React

Frameworks

Vue.js

Angular

Learning the backend

APIs

AJAX

Practice exercise 15.1

Node.js

Using the Express Node.js framework

Next steps

Chapter projects

Working with JSON

List-making project

Self-check quiz

Summary

16. Appendix – Practice Exercise, Project, and Self-Check Quiz

Answers

Chapter 1, Getting Started with JavaScript

Practice exercises

Projects

Creating an HTML file and a linked JavaScript file

Self-check quiz

Chapter 2, JavaScript Essentials

Practice exercises

Projects

Miles-to-kilometers converter

BMI calculator

Self-check quiz

Chapter 3, JavaScript Multiple Values

Practice exercises

Projects

Manipulating an array

Company product catalog

Self-check quiz

Chapter 4, Logic Statements

Practice exercises

Projects

Evaluating a number game answers

Friend checker game answers

Rock paper scissors game answers

Self-check quiz

Chapter 5, Loops

Practice exercises

Project

Math multiplication table

Self-check quiz

Chapter 6, Functions

Practice exercises

Projects

Create a recursive function

Set timeout order

Self-check quiz

Chapter 7, Classes

Practice exercises

Projects

Employee tracking app

Menu items price calculator

Self-check quiz

Chapter 8, Built-In JavaScript Methods

Practice exercises

Projects

Word scrambler

Countdown timer

Self-check quiz

Chapter 9, The Document Object Model

Practice exercises

Projects

Manipulating HTML elements with JavaScript

Self-check quiz

Chapter 10, Dynamic Element Manipulation Using the DOM

Practice exercises

Projects

Collapsible accordion component

Interactive voting system

Hangman game

Self-check quiz

Chapter 11, Interactive Content and Event Listeners

Practice exercises

Projects

Build your own analytics

Star rater system

Mouse position tracker

Box clicker speed test game

Self-check quiz

Chapter 12, Intermediate JavaScript

Practice exercises

Projects

Email extractor

Form validator

Simple math quiz

Self-check quiz

Chapter 13, Concurrency

Practice exercises

Projects

Password checker

Self-check quiz

Chapter 14, HTML5, Canvas, and JavaScript

Practice exercises

Projects

Create a Matrix effect

Countdown clock

Online paint app

Self-check quiz

Chapter 15, Next Steps

Practice exercises

Projects

Working with JSON

List-making project

Self-check quiz

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Index

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