JavaScript Cookbook. 3rd Edition - Helion

ebook

Autor: Adam D. Scott, Matthew MacDonald, Shelley Powers
ISBN: 9781492055709
stron: 538, Format: ebook
Data wydania: 2021-07-16
Księgarnia: Helion

Cena książki: 211,65 zł (poprzednio: 246,10 zł)
Oszczędzasz: 14% (-34,45 zł)

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Why reinvent the wheel every time you run into a problem with JavaScript? This cookbook is chock-full of code recipes for common programming tasks, along with techniques for building apps that work in any browser. You'll get adaptable code samples that you can add to almost any project--and you'll learn more about JavaScript in the process.

The recipes in this book take advantage of the latest features in ECMAScript 2020 and beyond and use modern JavaScript coding standards. You'll learn how to:

Set up a productive development environment with a code editor, linter, and test server
Work with JavaScript data types, such as strings, arrays, and BigInts
Improve your understanding of JavaScript functions, including arrow functions, closures, and generators
Apply object-oriented programming concepts like classes and inheritance
Work with rich media in JavaScript, including audio, video, and SVGs
Manipulate HTML markup and CSS styles
Use JavaScript anywhere with Node.js
Access and manipulate remote data with REST, GraphQL, and Fetch
Get started with the popular Express application-building framework
Perform asynchronous operations with Promises, async/await, and web workers

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Spis treści

JavaScript Cookbook. 3rd Edition eBook -- spis treści

Preface
- Book Audience
- Book Organization
- Conventions Used in This Book
- Using Code Examples
- OReilly Online Learning
- How to Contact Us
- Acknowledgments
I. The JavaScript Language
1. Setting Up a Development Environment
- Choosing a Code Editor
  - Problem
  - Solution
  - Discussion
  - See Also
- Using the Developer Console in Your Browser
  - Problem
  - Solution
  - Discussion
  - See Also
- Running Blocks of Code in the Developer Console
  - Problem
  - Solution
  - Discussion
  - See Also
- Using Strict Mode to Catch Common Mistakes
  - Problem
  - Solution
  - Discussion
  - See Also
- Filling in HTML Boilerplate with Emmet Shortcuts
  - Problem
  - Solution
  - Discussion
- Installing the npm Package Manager (with Node.js)
  - Problem
  - Solution
  - Discussion
  - See Also
  - Extra: Using a Terminal and Shell
- Downloading a Package with npm
  - Problem
  - Solution
  - Discussion
  - Extra: Understanding package.json
- Updating a Package with npm
  - Problem
  - Solution
  - Discussion
- Setting Up a Local Test Server
  - Problem
  - Solution
  - Discussion
  - See Also
- Enforcing Code Standards with a Linter
  - Problem
  - Solution
  - Discussion
- Styling Code Consistently with a Formatter
  - Problem
  - Solution
  - Discussion
- Experimenting in a JavaScript Playground
  - Problem
  - Solution
  - Discussion
2. Strings and Regular Expressions
- Checking for an Existing, Nonempty String
  - Problem
  - Solution
  - Discussion
- Converting a Numeric Value to a Formatted String
  - Problem
  - Solution
  - Discussion
  - See Also
- Inserting Special Characters
  - Problem
  - Solution
  - Discussion
  - See Also
- Inserting Emojis
  - Problem
  - Solution
  - Discussion
- Using Template Literals for Clearer String Concatenation
  - Problem
  - Solution
  - Discussion
- Performing a Case-Insensitive String Comparison
  - Problem
  - Solution
  - Discussion
- Checking If a String Contains a Specific Substring
  - Problem
  - Solution
  - Discussion
- Replacing All Occurrences of a String
  - Problem
  - Solution
  - Discussion
  - See Also
- Replacing HTML Tags with Named Entities
  - Problem
  - Solution
  - Discussion
  - See Also
- Using a Regular Expression to Replace Patterns in a String
  - Problem
  - Solution
  - Discussion
  - Extra: Regular Expressions
- Extracting a List from a String
  - Problem
  - Solution
  - Discussion
  - See Also
- Finding All Instances of a Pattern
  - Problem
  - Solution
  - Discussion
  - Extra: Highlighting Matches
- Removing Whitespace from the Beginning and End of a String
  - Problem
  - Solution
  - Discussion
  - See Also
- Converting the First Letter of a String to Uppercase
  - Problem
  - Solution
  - Discussion
  - See Also
- Validating an Email Address
  - Problem
  - Solution
  - Discussion
  - See Also
3. Numbers
- Generating Random Numbers
  - Problem
  - Solution
  - Discussion
  - See Also
- Generating Cryptographically Secure Random Numbers
  - Problem
  - Solution
  - Discussion
- Rounding to a Specific Decimal Place
  - Problem
  - Solution
  - Discussion
  - See Also
- Preserving Accuracy in Decimal Values
  - Problem
  - Solution
  - Discussion
  - See Also
- Converting a String to a Number
  - Problem
  - Solution
  - Discussion
- Converting a Decimal to a Hexadecimal Value
  - Problem
  - Solution
  - Discussion
- Converting Between Degrees and Radians
  - Problem
  - Solution
  - Discussion
- Calculating the Length of a Circular Arc
  - Problem
  - Solution
  - Discussion
- Manipulating Very Large Numbers with BigInt
  - Problem
  - Solution
  - Discussion
4. Dates
- Getting the Current Date and Time
  - Problem
  - Solution
  - Discussion
  - See Also
- Converting a String to a Date
  - Problem
  - Solution
  - Discussion
  - See Also
- Adding Days to a Date
  - Problem
  - Solution
  - Discussion
  - See Also
- Comparing Dates and Testing Dates for Equality
  - Problem
  - Solution
  - Discussion
  - See Also
- Calculating the Time Elapsed Between Two Dates
  - Problem
  - Solution
  - Discussion
  - See Also
- Formatting a Date Value as a String
  - Problem
  - Solution
  - Discussion
  - See Also
5. Arrays
- Checking If an Object Is an Array
  - Problem
  - Solution
  - Discussion
- Iterating Over All the Elements in an Array
  - Problem
  - Solution
  - Discussion
- Checking If Two Arrays Are Equal
  - Problem
  - Solution
  - Discussion
- Breaking Down an Array into Separate Variables
  - Problem
  - Solution
  - Discussion
  - See Also
- Passing an Array to a Function That Expects a List of Values
  - Problem
  - Solution
  - Discussion
  - See Also
- Cloning an Array
  - Problem
  - Solution
  - Discussion
  - See Also
- Merging Two Arrays
  - Problem
  - Solution
  - Discussion
  - See Also
- Copying a Portion of an Array by Position
  - Problem
  - Solution
  - Discussion
  - See Also
- Extracting Array Items That Meet Specific Criteria
  - Problem
  - Solution
  - Discussion
  - See Also
- Emptying an Array
  - Problem
  - Solution
  - Discussion
- Removing Duplicate Values
  - Problem
  - Solution
  - Discussion
  - See Also
- Flattening a Two-Dimensional Array
  - Problem
  - Solution
  - Discussion
- Searching Through an Array for Exact Matches
  - Problem
  - Solution
  - Discussion
  - See Also
- Searching Through an Array for Items That Meet Specific Criteria
  - Problem
  - Solution
  - Discussion
  - See Also
- Removing or Replacing Array Elements
  - Problem
  - Solution
  - Discussion
- Sorting an Array of Objects by a Property Value
  - Problem
  - Solution
  - Discussion
- Transforming Every Element of an Array
  - Problem
  - Solution
  - Discussion
- Combining an Arrays Values in a Single Calculation
  - Problem
  - Solution
  - Discussion
  - See Also
- Validating Array Contents
  - Problem
  - Solution
  - Discussion
  - See Also
- Creating a Collection of Nonduplicated Values
  - Problem
  - Solution
  - Discussion
- Creating a Key-Indexed Collection of Items
  - Problem
  - Solution
  - Discussion
6. Functions
- Passing a Function as an Argument to Another Function
  - Problem
  - Solution
  - Discussion
  - See Also
- Using Arrow Functions
  - Problem
  - Solution
  - Discussion
  - See Also
- Providing a Default Parameter Value
  - Problem
  - Solution
  - Discussion
- Creating a Function That Accepts Unlimited Arguments
  - Problem
  - Solution
  - Discussion
  - See Also
- Using Named Function Parameters
  - Problem
  - Solution
  - Discussion
  - See Also
- Creating a Function That Stores its State with a Closure
  - Problem
  - Solution
  - Discussion
  - See Also
- Creating a Generator Function That Yields Multiple Values
  - Problem
  - Solution
  - Discussion
  - See Also
  - Extra: Building a Repeatable Pseudorandom Number Generator
- Reducing Redundancy by Using Partial Application
  - Problem
  - Solution
  - Discussion
  - Advanced: A Partial Function Factory
  - Extra: Using bind() to Partially Provide Arguments
- Fixing this with Function Binding
  - Problem
  - Solution
  - Discussion
  - Extra: self = this
- Implementing a Recursive Algorithm
  - Problem
  - Solution
  - Discussion
7. Objects
- Checking if an Object Is a Certain Type
  - Problem
  - Solution
  - Discussion
- Using an Object Literal to Bundle Data
  - Problem
  - Solution
  - Discussion
  - See Also
  - Extra: Computed Property Names
- Checking If an Object Has a Property
  - Problem
  - Solution
  - Discussion
  - See Also
- Iterating Over All the Properties of an Object
  - Problem
  - Solution
  - Discussion
  - See Also
- Testing for an Empty Object
  - Problem
  - Solution
  - Discussion
- Merging the Properties of Two Objects
  - Problem
  - Solution
  - Discussion
- Customizing the Way a Property Is Defined
  - Problem
  - Solution
  - Discussion
  - See Also
- Preventing Any Changes to an Object
  - Problem
  - Solution
  - Discussion
- Intercepting and Changing Actions on an Object with a Proxy
  - Problem
  - Solution
  - Discussion
- Cloning an Object
  - Problem
  - Solution
  - Discussion
  - See Also
- Making a Deep Copy of an Object
  - Problem
  - Solution
  - Discussion
- Creating Absolutely Unique Object Property Keys
  - Problem
  - Solution
  - Discussion
- Creating Enums with Symbol
  - Problem
  - Solution
  - Discussion
  - See Also
8. Classes
- Creating a Reusable Class
  - Problem
  - Solution
  - Discussion
  - See Also
  - Extra: Multiple Constructors
- Adding Properties to a Class
  - Problem
  - Solution
  - Discussion
  - See Also
  - Extra: Private Fields
- Giving a Class a Better String Representation
  - Problem
  - Solution
  - Discussion
- Using the Constructor Pattern to Make a Custom Class
  - Problem
  - Solution
  - Discussion
  - See Also
- Supporting Method Chaining in Your Class
  - Problem
  - Solution
  - Discussion
- Adding Static Methods to a Class
  - Problem
  - Solution
  - Discussion
- Using a Static Method to Create Objects
  - Problem
  - Solution
  - Discussion
- Inheriting Functionality from Another Class
  - Problem
  - Solution
  - Discussion
  - Extra: Prototype Chains
- Organizing Your JavaScript Classes with Modules
  - Problem
  - Solution
  - Discussion
  - See Also
9. Asynchronous Programming
- Updating the Page During a Loop
  - Problem
  - Solution
  - Discussion
  - See Also
- Using a Function That Returns a Promise
  - Problem
  - Solution
  - Discussion
  - See Also
- Promisifying an Asynchronous Function That Uses a Callback
  - Problem
  - Solution
  - Discussion
  - See Also
- Executing Multiple Promises Concurrently
  - Problem
  - Solution
  - Discussion
- Waiting for a Promise to Finish with Await and Async
  - Problem
  - Solution
  - Discussion
- Creating an Asynchronous Generator Function
  - Problem
  - Solution
  - Discussion
  - See Also
- Using a Web Worker to Perform a Background Task
  - Problem
  - Solution
  - Discussion
  - See Also
- Adding Progress Support to a Web Worker
  - Problem
  - Solution
  - Discussion
  - See Also
10. Errors and Testing
- Catching and Neutralizing an Error
  - Problem
  - Solution
  - Solution
  - See Also
- Catching Different Types of Errors
  - Problem
  - Solution
  - Discussion
  - See Also
- Catching Asynchronous Errors
  - Problem
  - Solution
  - Discussion
  - See Also
- Detecting Unhandled Errors
  - Problem
  - Solution
  - Discussion
  - Extra: Logging Tools
- Throwing a Standard Error
  - Problem
  - Solution
  - Discussion
  - See Also
- Throwing a Custom Error
  - Problem
  - Solution
  - Discussion
  - See Also
- Writing Unit Tests for Your Code
  - Problem
  - Solution
  - Discussion
  - See Also
  - Extra: Writing Tests First
- Tracking Test Code Coverage
  - Problem
  - Solution
  - Discussion
II. JavaScript in the Browser
11. Browser Tools
- Debugging JavaScript
  - Problem
  - Solution
  - Discussion
- Analyzing Runtime Performance
  - Problem
  - Solution
  - Discussion
- Identifying Unused JavaScript
  - Problem
  - Solution
  - Discussion
- Using Lighthouse to Measure Best Practices
  - Problem
  - Solution
  - Discussion
12. Working with HTML
- Accessing a Given Element and Finding Its Parent and Child Elements
  - Problem
  - Solution
  - Discussion
- Traversing the Results from querySelectorAll() with forEach()
  - Problem
  - Solution
  - Discussion
- Adding Click Functionality to an Element
  - Problem
  - Solution
  - Discussion
- Finding All Elements That Share an Attribute
  - Problem
  - Solution
  - Discussion
- Accessing All Elements of a Specific Type
  - Problem
  - Solution
  - Discussion
  - See Also
- Discovering Child Elements Using the Selectors API
  - Problem
  - Solution
  - Discussion
  - See Also
- Changing an Elements Class Value
  - Problem
  - Solution
  - Discussion
- Setting an Elements Style Attribute
  - Problem
  - Solution
  - Discussion
  - Extra: Accessing an Existing Style Setting
  - Advanced
- Adding Text to a New Paragraph
  - Problem
  - Solution
  - Discussion
- Inserting a New Element in a Specific DOM Location
  - Problem
  - Solution
  - Discussion
- Checking If a Checkbox Is Checked
  - Problem
  - Solution
  - Discussion
- Adding Up Values in an HTML Table
  - Problem
  - Solution
  - Discussion
  - Extra: forEach and querySelectorAll
  - Extra: Modularization of Globals
- Deleting Rows from an HTML Table
  - Problem
  - Solution
  - Discussion
- Hiding Page Sections
  - Problem
  - Solution
  - Discussion
- Creating Hover-Based Pop-Up Info Windows
  - Problem
  - Solution
  - Discussion
- Validating Form Data
  - Problem
  - Solution
  - Discussion
  - Extra: HTML5 Form Validation Techniques
- Highlighting Form Errors and Accessibility
  - Problem
  - Solution
  - Discussion
  - See Also
- Creating an Accessible Automatically Updated Region
  - Problem
  - Solution
  - Discussion
13. Fetching Remote Data
- Requesting Remote Data with Fetch
  - Problem
  - Solution
  - Discussion
- Using XMLHttpRequest
  - Problem
  - Solution
  - Discussion
- Submitting a Form
  - Problem
  - Solution
  - Discussion
- Populating a Selection List from the Server
  - Problem
  - Solution
  - Discussion
- Parsing Returned JSON
  - Problem
  - Solution
  - Discussion
- Fetching and Parsing XML
  - Problem
  - Solution
  - Discussion
- Sending Binary Data and Loading into an Image
  - Problem
  - Solution
  - Discussion
- Sharing HTTP Cookies Across Domains
  - Problem
  - Solution
  - Discussion
- Using Websockets to Establish a Two-Way Communication Between Client and Server
  - Problem
  - Solution
  - Discussion
  - See Also
- Long Polling a Remote Data Source
  - Problem
  - Solution
  - Discussion
14. Data Persistence
- Persisting Information with Cookies
  - Problem
  - Solution
  - Discussion
- Using sessionStorage for Client-Side Storage
  - Problem
  - Solution
  - Discussion
  - See Also
- Creating a localStorage Client-Side Data Storage Item
  - Problem
  - Solution
  - Discussion
  - See Also
- Persisting Larger Chunks of Data on the Client Using IndexedDB
  - Problem
  - Solution
  - Discussion
- Simplifying IndexedDB with a Library
  - Problem
  - Solution
  - Discussion
15. Working with Media
- Adding JavaScript to SVG
  - Problem
  - Solution
  - Discussion
  - Extra: Using SVG Libraries
- Accessing SVG from a Web Page Script
  - Problem
  - Solution
  - Discussion
- Creating an SVG Bar Chart with D3
  - Problem
  - Solution
  - Discussion
- Integrating SVG and the Canvas Element in HTML
  - Problem
  - Solution
  - Discussion
  - Extra: Canvas? Or SVG?
- Running a Routine When an Audio File Begins Playing
  - Problem
  - Solution
  - Discussion
- Controlling Video from JavaScript with the video Element
  - Problem
  - Solution
  - Discussion
16. Writing Web Applications
- Bundling JavaScript
  - Problem
  - Solution
  - Discussion
  - Extra: Using npm Modules
- JavaScript and the Mobile Web
  - Problem
  - Solution
  - Discussion
  - See Also
- Writing a Progressive Web Application
  - Problem
  - Solution
  - Discussion
- Testing and Profiling a Progressive Web Application
  - Problem
  - Solution
  - Discussion
- Getting the Value of the Current URL
  - Problem
  - Solution
  - Discussion
- Redirecting a URL
  - Problem
  - Solution
  - Discussion
- Copying Text to a Users Clipboard
  - Problem
  - Solution
  - Discussion
- Enabling a Mobile-Like Notification in the Desktop Browser
  - Problem
  - Solution
  - Discussion
  - Extra: Web Notifications and the Page Visibility API
- Loading a File Locally in the Browser
  - Problem
  - Solution
  - Discussion
- Extending the Possible with Web Components
  - Problem
  - Solution
  - Discussion
    - HTML templates
    - Custom elements
    - Shadow DOM
- Choosing a Front-End Framework
  - Problem
  - Solution
  - React
  - Vue
  - Svelte
  - Angular
III. Node.js
17. Node Basics
- Managing Node Versions with Node Version Manager
  - Problem
  - Solution
  - Discussion
- Responding to a Simple Browser Request
  - Problem
  - Solution
  - Discussion
- Interactively Trying Out Node Code Snippets with REPL
  - Problem
  - Solution
  - Discussion
  - Extra: Wait a Second, What Global Object?
- Reading and Writing File Data
  - Problem
  - Solution
  - Discussion
  - Advanced
- Getting Input from the Terminal
  - Problem
  - Solution
  - Discussion
  - See Also
- Getting the Path to the Current Script
  - Problem
  - Solution
  - Discussion
- Working with Node Timers and Understanding the Node Event Loop
  - Problem
  - Solution
  - Discussion
18. Node Modules
- Searching for a Specific Node Module via npm
  - Problem
  - Solution
  - Discussion
- Converting Your Library into a Node Module
  - Problem
  - Solution
  - Discussion
  - See Also
- Taking Your Code Across Module Environments
  - Problem
  - Solution
  - Discussion
  - See Also
- Creating an Installable Node Module
  - Problem
  - Solution
  - Discussion
  - Extra: The README File and Markdown Syntax
- Writing Multiplatform Libraries
  - Problem
  - Solution
  - Discussion
    - Publishing the library
    - Handling library dependencies
- Unit Testing Your Modules
  - Problem
  - Solution
  - Discussion
19. Managing Node
- Using Environment Variables
  - Problem
  - Solution
  - Discussion
- Managing Callback Hell
  - Problem
  - Solution
  - Discussion
- Accessing Command-Line Functionality Within a Node Application
  - Problem
  - Solution
  - Discussion
  - Extra: Using Child Processes with Windows
- Passing Command-Line Arguments
  - Problem
  - Solution
  - Discussion
- Creating a Command-Line Utility with Help from Commander
  - Problem
  - Solution
  - Discussion
- Keeping a Node Instance Up and Running
  - Problem
  - Solution
  - Discussion
- Monitoring Application Changes and Restarting During Local Development
  - Problems
  - Solution
  - Discussion
- Scheduling Repeat Tasks
  - Problem
  - Solution
  - Discussion
- Testing the Performance and Capability of Your WebSockets Application
  - Problem
  - Solution
  - Discussion
20. Remote Data
- Fetching Remote Data
  - Problem
  - Solution
  - Discussion
- Screen Scraping
  - Problem
  - Solution
  - Discussion
- Accessing JSON-Formatted Data via a RESTful API
  - Problem
  - Solution
  - Discussion
  - See Also
21. Building Web Applications with Express
- Using Express to Respond to Requests
  - Problem
  - Solution
  - Discussion
- Using the Express-Generator
  - Problem
  - Solution
  - Discussion
- Routing
  - Problem
  - Solution
  - Discussion
- Working with OAuth
  - Problem
  - Solution
  - Discussion
    - Authorization isnt authentication
    - Client Credentials Grant
    - Read/write authorization with OAuth 1.0
- OAuth 2 User Authentication with Passport.js
  - Problem
  - Solution
  - Discussion
- Serving Up Formatted Data
  - Problem
  - Solution
  - Discussion
- Building a RESTful API
  - Problem
  - Solution
  - Discussion
- Building a GraphQL API
  - Problem
  - Solution
  - Discussion
Index