The JavaScript Pocket Guide 1st Edition by Lenny Burdette ISBN 978-0321713131

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ISBN 13: 978-0321713131

Author: Lenny Burdette

JavaScript is an object-oriented scripting language that enables you to modify a document’s structure, styling, and content in response to user actions. This handy pocket serves as both a quick introduction to the language and acts a valuable reference. It’s packed with tips as well as JavaScript syntax, methods, and properties. Concise and inexpensive, it’s exactly the guide many web designers and developers need.

Table of contents: 

I Background
1 Before you buy the book
1.1 About the content
1.2 Previewing and buying this book
1.3 About the author
1.4 Acknowledgements
2 FAQ: book and supplementary material
2.1 How to read this book
2.2 I own a digital version
2.3 I own the print version (“JavaScript for impatient programmers”)
2.4 Notations and conventions
3 Why JavaScript?
3.1 The cons of JavaScript
3.2 The pros of JavaScript
3.3 Pro and con of JavaScript: innovation
4 The nature of JavaScript
4.1 JavaScript’s influences
4.2 The nature of JavaScript
4.3 Tips for getting started with JavaScript
5 History and evolution of JavaScript
5.1 How JavaScript was created
5.2 Standardization: JavaScript vs. ECMAScript
5.3 Timeline of ECMAScript versions
5.4 Evolving JavaScript: TC39 (Ecma Technical Committee 39)
5.5 The TC39 process for proposed ECMAScript features
5.6 How to not break the web while changing JavaScript
5.7 FAQ: ECMAScript and TC39
6 New JavaScript features
6.1 New in ECMAScript 2024
6.2 New in ECMAScript 2023
6.3 New in ECMAScript 2022
6.4 New in ECMAScript 2021
6.5 New in ECMAScript 2020
6.6 New in ECMAScript 2019
6.7 New in ECMAScript 2018
6.8 New in ECMAScript 2017
6.9 New in ECMAScript 2016
6.10 Source of this chapter
7 FAQ: JavaScript
7.1 What are good references for JavaScript?
7.2 How do I find out what JavaScript features are supported where?
7.3 Where can I look up what features are planned for JavaScript?
7.4 Why does JavaScript fail silently so often?
7.5 Why can’t we clean up JavaScript, by removing quirks and outdated features?
7.6 How can I quickly try out a piece of JavaScript code?
II First steps
8 Using JavaScript: the big picture
8.1 What are you learning in this book?
8.2 The structure of browsers and Node.js
8.3 JavaScript references
8.4 Further reading
9 Syntax
9.1 An overview of JavaScript’s syntax
9.2 (Advanced)
9.3 Hashbang lines (Unix shell scripts)
9.4 Identifiers
9.5 Statement vs. expression
9.6 Ambiguous syntax
9.7 Semicolons
9.8 Automatic semicolon insertion (ASI)
9.9 Semicolons: best practices
9.10 Strict mode vs. sloppy mode
10 Consoles: interactive JavaScript command lines
10.1 Trying out JavaScript code
10.2 The console.* API: printing data and more
11 Assertion API
11.1 Assertions in software development
11.2 How assertions are used in this book
11.3 Normal comparison vs. deep comparison
11.4 Quick reference: module assert
12 Getting started with exercises
12.1 Exercises
12.2 Unit tests in JavaScript
III Variables and values
13 Variables and assignment
13.1 let
13.2 const
13.3 Deciding between const and let
13.4 The scope of a variable
13.5 (Advanced)
13.6 Terminology: static vs. dynamic
13.7 Global variables and the global object
13.8 Declarations: scope and activation
13.9 Closures
14 Values
14.1 What’s a type?
14.2 JavaScript’s type hierarchy
14.3 The types of the language specification
14.4 Primitive values vs. objects
14.5 The operators typeof and instanceof: what’s the type of a value?
14.6 Classes and constructor functions
14.7 Converting between types
15 Operators
15.1 Making sense of operators
15.2 The plus operator (+)
15.3 Assignment operators
15.4 Equality: == vs. ===
15.5 Ordering operators
15.6 Various other operators
IV Primitive values
16 The non-values undefined and null
16.1 undefined vs. null
16.2 Occurrences of undefined and null
16.3 Checking for undefined or null
16.4 The nullish coalescing operator (??) for default values [ES2020]16.5 undefined and null don’t have properties
16.6 The history of undefined and null
17 Booleans
17.1 Converting to boolean
17.2 Falsy and truthy values
17.3 Truthiness-based existence checks
17.4 Conditional operator (? 🙂
17.5 Binary logical operators: And (x && y), Or (x || y)
17.6 Logical Not (!)
18 Numbers
18.1 Numbers are used for both floating point numbers and integers
18.2 Number literals
18.3 Arithmetic operators
18.4 Converting to number
18.5 Error values
18.6 The precision of numbers: careful with decimal fractions
18.7 (Advanced)
18.8 Background: floating point precision
18.9 Integer numbers in JavaScript
18.10 Bitwise operators
18.11 Quick reference: numbers
19 Math
19.1 Data properties
19.2 Exponents, roots, logarithms
19.3 Rounding
19.4 Trigonometric Functions
19.5 Various other functions
19.6 Sources
20 Bigints – arbitrary-precision integers [ES2020] (advanced)
20.1 Why bigints?
20.2 Bigints
20.3 Bigint literals
20.4 Reusing number operators for bigints (overloading)
20.5 The wrapper constructor BigInt
20.6 Coercing bigints to other primitive types
20.7 TypedArrays and DataView operations for 64-bit values
20.8 Bigints and JSON
20.9 FAQ: Bigints
21 Unicode – a brief introduction (advanced)
21.1 Code points vs. code units
21.2 Encodings used in web development: UTF-16 and UTF-8
21.3 Grapheme clusters – the real characters
22 Strings
22.1 Cheat sheet: strings
22.2 Plain string literals
22.3 Accessing JavaScript characters
22.4 String concatenation
22.5 Converting to string
22.6 Comparing strings
22.7 Atoms of text: code points, JavaScript characters, grapheme clusters
22.8 Quick reference: Strings
23 Using template literals and tagged templates [ES6]
23.1 Disambiguation: “template”
23.2 Template literals
23.3 Tagged templates
23.4 Examples of tagged templates (as provided via libraries)
23.5 Raw string literals
23.6 (Advanced)
23.7 Multiline template literals and indentation
23.8 Simple templating via template literals
24 Symbols [ES6]
24.1 Symbols are primitives that are also like objects
24.2 The descriptions of symbols
24.3 Use cases for symbols
24.4 Publicly known symbols
24.5 Converting symbols
V Control flow and data flow
25 Control flow statements
25.1 Controlling loops: break and continue
25.2 Conditions of control flow statements
25.3 if statements [ES1]25.4 switch statements [ES3]25.5 while loops [ES1]25.6 do-while loops [ES3]25.7 for loops [ES1]25.8 for-of loops [ES6]25.9 for-await-of loops [ES2018]25.10 for-in loops (avoid) [ES1]25.11 Recomendations for looping
26 Exception handling
26.1 Motivation: throwing and catching exceptions
26.2 throw
26.3 The try statement
26.4 Error and its subclasses
26.5 Chaining errors
27 Callable values
27.1 Kinds of functions
27.2 Ordinary functions
27.3 Specialized functions [ES6]27.4 Summary: kinds of callable values
27.5 Returning values from functions and methods
27.6 Parameter handling
27.7 Methods of functions: .call(), .apply(), .bind()
28 Evaluating code dynamically: eval(), new Function() (advanced)
28.1 eval()
28.2 new Function()
28.3 Recommendations
VI Modularity
29 Modules [ES6]
29.1 Cheat sheet: modules
29.2 JavaScript source code formats
29.3 Before we had modules, we had scripts
29.4 Module systems created prior to ES6
29.5 ECMAScript modules
29.6 Named exports and imports
29.7 Default exports and imports
29.8 Re-exporting
29.9 More details on exporting and importing
29.10 npm packages
29.11 Naming modules
29.12 Module specifiers
29.13 import.meta – metadata for the current module [ES2020]29.14 Loading modules dynamically via import() [ES2020] (advanced)
29.15 Top-level await in modules [ES2022] (advanced)
29.16 Polyfills: emulating native web platform features (advanced)
30 Objects
30.1 Cheat sheet: objects
30.2 What is an object?
30.3 Fixed-layout objects
30.4 Spreading into object literals (…) [ES2018]30.5 Methods and the special variable this
30.6 Optional chaining for property getting and method calls [ES2020] (advanced)
30.7 Dictionary objects (advanced)
30.8 Property attributes and property descriptors [ES5] (advanced)
30.9 Protecting objects from being changed [ES5] (advanced)
30.10 Prototype chains
30.11 FAQ: objects
30.12 Quick reference: Object
30.13 Quick reference: Reflect
31 Classes [ES6]
31.1 Cheat sheet: classes
31.2 The essentials of classes
31.3 The internals of classes
31.4 Prototype members of classes
31.5 Instance members of classes [ES2022]31.6 Static members of classes
31.7 Subclassing
31.8 The methods and accessors of Object.prototype (advanced)
31.9 FAQ: classes
VII Collections
32 Synchronous iteration [ES6]
32.1 What is synchronous iteration about?
32.2 Core iteration constructs: iterables and iterators
32.3 Iterating manually
32.4 Iteration in practice
32.5 Grouping iterables [ES2024]32.6 Example: grouping by property value
32.7 Quick reference: synchronous iteration
33 Arrays (Array)
33.1 Cheat sheet: Arrays
33.2 Ways of using Arrays: fixed layout vs. sequence
33.3 Basic Array operations
33.4 for-of and Arrays
33.5 Array-like objects
33.6 Converting iterables and Array-like values to Arrays
33.7 Creating and filling Arrays with arbitrary lengths
33.8 Multidimensional Arrays
33.9 Arrays are actually dictionaries (advanced)
33.10 Destructive vs. non-destructive Array operations
33.11 Adding and removing elements at either end of an Array
33.12 Array methods that accept element callbacks
33.13 Transforming with element callbacks: .map(), .filter(), .flatMap()
33.14 .reduce(): computing a summary for an Array
33.15 .sort(): sorting Arrays
33.16 Arrays can use operations for iterables
33.17 Quick reference: Array
34 Typed Arrays: handling binary data [ES6] (advanced)
34.1 An overview of the API
34.2 Using Typed Arrays
34.3 Using DataViews
34.4 Element types
34.5 Converting to and from Typed Arrays
34.6 Resizing ArrayBuffers [ES2024]34.7 Transferring and detaching ArrayBuffers [ES2024]34.8 Quick references: indices vs. offsets
34.9 Quick reference: ArrayBuffers
34.10 Quick reference: Typed Arrays
34.11 Quick reference: DataViews
35 Maps (Map) [ES6]
35.1 Using Maps
35.2 Example: Counting characters
35.3 A few more details about the keys of Maps (advanced)
35.4 Missing Map operations
35.5 Quick reference: Map
35.6 FAQ: Maps
36 WeakMaps (WeakMap) [ES6] (advanced)
36.1 WeakMaps are black boxes
36.2 The keys of a WeakMap are weakly held
36.3 Attaching values to objects via WeakMaps
36.4 Quick reference: WeakMap
37 Sets (Set) [ES6]
37.1 Using Sets
37.2 Examples of using Sets
37.3 What Set elements are considered equal?
37.4 Missing Set operations
37.5 Sets can use operations for iterables
37.6 Quick reference: Set
37.7 FAQ: Sets
38 WeakSets (WeakSet) [ES6] (advanced)
38.1 Example: Marking objects as safe to use with a method
38.2 WeakSet API
39 Destructuring [ES6]
39.1 A first taste of destructuring
39.2 Constructing vs. extracting
39.3 Where can we destructure?
39.4 Object-destructuring
39.5 Array-destructuring
39.6 Examples of destructuring
39.7 What happens if a pattern part does not match anything?
39.8 What values can’t be destructured?
39.9 (Advanced)
39.10 Default values
39.11 Parameter definitions are similar to destructuring
39.12 Nested destructuring
40 Synchronous generators [ES6] (advanced)
40.1 What are synchronous generators?
40.2 Calling generators from generators (advanced)
40.3 Background: external iteration vs. internal iteration
40.4 Use case for generators: reusing traversals
40.5 Advanced features of generators
VIII Asynchronicity
41 Foundations of asynchronous programming in JavaScript
41.1 A roadmap for asynchronous programming in JavaScript
41.2 The call stack
41.3 The event loop
41.4 How to avoid blocking the JavaScript process
41.5 Patterns for delivering asynchronous results
41.6 Asynchronous code: the downsides
41.7 Resources
42 Promises for asynchronous programming [ES6]
42.1 The basics of using Promises
42.2 Examples
42.3 Error handling: don’t mix rejections and exceptions
42.4 Promise-based functions start synchronously, settle asynchronously
42.5 Promise combinator functions: working with Arrays of Promises
42.6 Concurrency and Promise.all() (advanced)
42.7 Tips for chaining Promises
42.8 Quick reference: Promise combinator functions
43 Async functions [ES2017]
43.1 Async functions: the basics
43.2 Returning from async functions
43.3 await: working with Promises
43.4 (Advanced)
43.5 Concurrency and await
43.6 Tips for using async functions
44 Asynchronous iteration [ES2018]44.1 Basic asynchronous iteration
44.2 Asynchronous generators
44.3 Async iteration over Node.js streams
IX More standard library
45 Regular expressions (RegExp)
45.1 Creating regular expressions
45.2 Syntax characters and escaping
45.3 Syntax: atoms of regular expressions
45.4 Syntax: character class escapes
45.5 Syntax: character classes
45.6 Syntax: capture groups
45.7 Syntax: quantifiers
45.8 Syntax: assertions
45.9 Syntax: disjunction (|)
45.10 Regular expression flags
45.11 Properties of regular expression objects
45.12 Match objects
45.13 Methods for working with regular expressions
45.14 The flags /g and /y, and the property .lastIndex (advanced)
45.15 Techniques for working with regular expressions
46 Dates (Date)
46.1 Best practice: avoid the built-in Date
46.2 Time standards
46.3 Background: date time formats (ISO)
46.4 Time values
46.5 Creating Dates
46.6 Getters and setters
46.7 Converting Dates to strings
47 Creating and parsing JSON (JSON)
47.1 The discovery and standardization of JSON
47.2 JSON syntax
47.3 Using the JSON API
47.4 Customizing stringification and parsing (advanced)
47.5 FAQ
X Miscellaneous topics
48 Next steps: overview of web development
48.1 Tips against feeling overwhelmed
48.2 Things worth learning for web development
48.3 An overview of JavaScript tools
48.4 Tools not related to JavaScript
XI Appendices

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