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An Introduction to JavaScript
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An Introduction to JavaScript
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The JavaScript language
An introduction
- An Introduction to JavaScript
- Manuals and specifications (@kooshan75)
- Code editors
- Developer console
JavaScript Fundamentals
- Hello, world!
- Code structure
- The modern mode, "use strict"
- Variables
- Data types
- Interaction: alert, prompt, confirm (@mahdyar) Interaction: alert, prompt, confirm #96
- Type Conversions
- Basic operators, maths (@kooshan75) Operators #19
- Comparisons (@emadpoursina) Comparisons #101
- Conditional branching: if, '?' (@mahdiHash) Conditional branching: if, '?' #143
- Logical operators (@mahdiHash) Logical operators #100
- Nullish coalescing operator '??' (@Hossein13M) Nullish coalescing operator '??' #53
- Loops: while and for (@mahdiHash) Loops: while and for #103
- The "switch" statement (@newshahn) Switch #61
- Functions (@kooshan75) Functions #22
- Function expressions (@mahdiHash) Function expressions #105
- Arrow functions, the basics (@newshahn) Arrow functions, the basics #59
- JavaScript specials
Code quality
- Debugging in the browser (@mahdyar) Debugging in Chrome #93
- Coding Style (@mahdi-momeni) Coding Style #72
- Comments (@samanzameni)
- Ninja code (@mrmowji)
- Automated testing with Mocha (@EhsanShahbazii) Automated testing with Mocha #250
- Polyfills and transpilers (@newshahn) polyfills and transpilers #104
Objects: the basics
- Objects (@mahdiHash) Objects #118
- Object references and copying (@mahdiHash) Object references and copying #121
- Garbage collection (@mahdiHash) Garbage collection #123
- Object methods, "this" (@mahdiHash) Object methods, "this" #122
- Constructor, operator "new" (@mahdiHash) Constructor, operator "new" #98
- Optional chaining '?.' (@mahdi-momeni) Optional chaining '?.' #70
- Symbol type (@mahdiHash) Symbol type #126
- Object to primitive conversion (@mahdiHash) Object to primitive conversion #177
Data types
- Methods of primitives
- Numbers (@kooshan75) Data types - Numbers #18
- Strings (@mahdiHash) Strings #128
- Arrays (@mahdiHash) Arrays #131
- Array methods (@mahdiHash) Array methods #132
- Iterables (@mahdiHash) Iterables #133
- Map and Set (@mahdiHash) Map and Set #135
- WeakMap and WeakSet (@mahdiHash) WeakMap and WeakSet #136
- Object.keys, values, entries (@mahdiHash) Object.keys, values, entries #137
- Destructuring assignment (@mahdiHash) Destructuring assignment #155
- Date and time (@mahdiHash) Date and time #139
- JSON methods, toJSON (@mahdiHash) JSON methods, toJSON #141
Advanced working with functions
- Recursion and stack (@mahdiHash) Recursion and stack #159
- Rest parameters and spread syntax (@Amirhossein-Veysi) Rest parameters and spread syntax #142
- Variable scope, closure (@mahdiHash) Variable scope, closure #150
- The old "var" (@mahdiHash) The old "var" #161
- Global object (@Amirhossein-Veysi) Global object #146
- Function object, NFE (@mahdiHash) Function object, NFE #156
- The "new Function" syntax (@erfanyeganegi) The "new Function" syntax #151
- Scheduling: setTimeout and setInterval (@mahdiHash) Scheduling: setTimeout and setInterval #157
- Decorators and forwarding, call/apply (@mahdiHash) Decorators and forwarding, call/apply #163
- Function binding (@mahdiHash) Function binding #165
- Arrow functions revisited (@mahdiHash) Arrow functions revisited #166
Object properties configuration
- Property flags and descriptors (@mahdiHash) Property flags and descriptors #168
- Property getters and setters (@mahdiHash) Property getters and setters #170
Prototypes, inheritance
- Prototypal inheritance (@mahdiHash) Prototypal inheritance #172
- F.prototype (@Amirhossein-Veysi) F.prototype #171
- Native prototypes (@mahdiHash) Native prototypes #175
- Prototype methods, objects without proto (@Amirhossein-Veysi) Prototype methods, objects without __proto__ #174
Classes
- Class basic syntax (@Amirhossein-Veysi) Class basic syntax #176
- Class inheritance (@mahdiHash) Class inheritance #178
- Static properties and methods (@mahdiHash) Static properties and methods #179
- Private and protected properties and methods (@mahdiHash) Private and protected properties and methods #182
- Extending built-in classes (@mahdiHash) Extending built-in classes #184
- Class checking: "instanceof" (@mahdiHash) Class checking: "instanceof" #186
- Mixins (@mahdiHash) Mixins #189
Error handling
- Error handling, "try...catch" (@mahdiHash) Error handling, "try...catch" #194
- Custom errors, extending Error (@mahdiHash) Custom errors, extending Error #199
Promises, async/await
- Introduction: callbacks (@Arash-1999) Introduction: callbacks #80
- Promise (@Beroozam) Promise #197
- Promises chaining (@mahdiHash) Promises chaining #223
- Error handling with promises (@mahdiHash) Error handling with promises #224
- Promise API (@mahdiHash)
- Promisification (@samanzameni) Promisification #366
- Microtasks (@D0x45) Microtasks #277
- Async/await (@ARTM2000) Async/await #219
Generators, advanced iteration
Modules
- Modules, introduction (@emadpoursina) Modules, introduction #106
- Export and Import (@mostafa-nematpour) Export and Import #297
- Dynamic imports (@mostafa-nematpour) Dynamic imports #299
Miscellaneous
- Proxy and Reflect (@mostafa-nematpour)
- Eval: run a code string (@AminZibayi) Eval: run a code string #44
- Currying (@moAlireza) Currying #304
- Reference Type (@nafasebra)
- BigInt (@amirhshahbazi) BigInt #120
- Unicode, String internals (@mostafa-nematpour) Unicode, String internals #269
- WeakRef and FinalizationRegistry
Browser: Document, Events, Interfaces
Document
- Browser environment, specs (@kooshan75)
- DOM tree (@Beroozam) DOM tree #188
- Walking the DOM
- Searching: getElement*, querySelector* (@shahrzadJavadiKoushesh) Searching: getElement*, querySelector* #278
- Node properties: type, tag and contents
- Attributes and properties
- Modifying the document
- Styles and classes
- Element size and scrolling
- Window sizes and scrolling
- Coordinates
Introduction to Events
- Introduction to browser events (@erfanyeganegi) Introduction to browser events #154
- Bubbling and capturing (@erfanyeganegi) Bubbling and capturing #158
- Event delegation (@MHMighani) Event delegation #319
- Browser default actions (@MHMighani) Browser default actions #318
- Dispatching custom events (@HannaParsa) Dispatching custom events #283
UI Events
- Mouse events (@erfanyeganegi) Mouse events #149
- Moving the mouse: mouseover/out, mouseenter/leave (@erfanyeganegi) Moving the mouse: mouseover/out, mouseenter/leave #152
- Drag'n'Drop with mouse events (@hiradsajde)
- Pointer events
- Keyboard: keydown and keyup (@khosrovafaee)
- Scrolling (@TheVelius) Scrolling #276
Forms, controls
- Form properties and methods (@shahrzadJavadiKoushesh) Form properties and methods #285
- Focusing: focus/blur (@shahrzadJavadiKoushesh) Focusing: focus/blur #282
- Events: change, input, cut, copy, paste (@shahrzadJavadiKoushesh) Events: change, input, cut, copy, paste #290
- Forms: event and method submit (@shahrzadJavadiKoushesh) Forms: event and method submit #292
Document and resource loading
- Page: DOMContentLoaded, load, beforeunload, unload
- Scripts: async, defer
- Resource loading: onload and onerror
Miscellaneous
- Mutation observer (@HannaParsa) Mutation observer #288
- Selection and Range
- Event loop: microtasks and macrotasks
Frames and windows
- Popups and window methods (@shahrzadJavadiKoushesh) Popups and window methods #294
- Cross-window communication (@shahrzadJavadiKoushesh) Cross-window communication #302
- The clickjacking attack (@shahrzadJavadiKoushesh) The clickjacking attack #308
Binary data, files
- ArrayBuffer, binary arrays (@mehrsa-a) ArrayBuffer, binary arrays #309
- TextDecoder and TextEncoder (@mehrsa-a) TextDecoder and TextEncoder #310
- Blob (@mehrsa-a)
- File and FileReader (@EsmaeilSaleh)
Network requests
- Fetch (@amirroox) Fetch #264
- FormData (@Atefeh-Masoumi) FormData #315
- Fetch: Download progress
- Fetch: Abort
- Fetch: Cross-Origin Requests
- Fetch API (@Mahdibaham)
- URL objects (@shahrzadJavadiKoushesh)
- XMLHttpRequest
- Resumable file upload
- Long polling
- WebSocket (@MHMighani) Websocket #316
- Server Sent Events
Storing data in the browser
- Cookies, document.cookie (@reza-nikravesh)
- LocalStorage, sessionStorage (@TheVelius)
- IndexedDB
Animation
Web components
- From the orbital height (@HannaParsa) From the orbital height #313
- Custom elements (@shayandrg)
- Shadow DOM
- Template element (@samanzameni) Template element #368
- Shadow DOM slots, composition
- Shadow DOM styling
- Shadow DOM and events
Regular expressions
- Patterns and flags (@EhsanShahbazii)
- Character classes (@EhsanShahbazii) Character classes #252
- Unicode: flag "u" and class \p{...} (@EhsanShahbazii) Unicode: flag "u" and class \p{...} #253
- Anchors: string start ^ and end $ (@EhsanShahbazii)
- Multiline mode of anchors ^ $, flag "m" (@EhsanShahbazii) Multiline mode of anchors ^ $, flag "m" #259
- Word boundary: \b (@EhsanShahbazii)
- Escaping, special characters (@EhsanShahbazii)
- Sets and ranges [...]
- Quantifiers +, *, ? and {n}
- Greedy and lazy quantifiers
- Capturing groups
- Backreferences in pattern: \N and \k<name>
- Alternation (OR) |
- Lookahead and lookbehind
- Catastrophic backtracking
- Sticky flag "y", searching at position
- Methods of RegExp and String