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## The JavaScript language

### An introduction

* [ ] [An Introduction to JavaScript](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/01-getting-started/1-intro)
* [ ] [Code editors](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/01-getting-started/2-code-editors)
* [ ] [Developer console](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/01-getting-started/3-devtools)

### JavaScript Fundamentals

* [ ] [Hello, world!](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/02-first-steps/01-hello-world)
* [ ] [Code structure](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/02-first-steps/02-structure)
* [ ] [The modern mode, "use strict"](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/02-first-steps/03-strict-mode)
* [ ] [Variables](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/02-first-steps/04-variables)
* [ ] [Data types](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/02-first-steps/05-types)
* [ ] [Type Conversions](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/02-first-steps/06-type-conversions)
* [ ] [Operators](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/02-first-steps/07-operators)
* [ ] [Comparisons](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/02-first-steps/08-comparison)
* [ ] [Interaction: alert, prompt, confirm](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/02-first-steps/09-alert-prompt-confirm)
* [ ] [Conditional operators: if, '?'](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/02-first-steps/10-ifelse)
* [ ] [Logical operators](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/02-first-steps/11-logical-operators)
* [ ] [Loops: while and for](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/02-first-steps/12-while-for)
* [ ] [The "switch" statement](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/02-first-steps/13-switch)
* [ ] [Functions](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/02-first-steps/14-function-basics)
* [ ] [Function expressions and arrows](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/02-first-steps/15-function-expressions-arrows)
* [ ] [JavaScript specials](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/02-first-steps/16-javascript-specials)

### Code quality

* [ ] [Debugging in Chrome](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/03-code-quality/01-debugging-chrome)
* [ ] [Coding Style](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/03-code-quality/02-coding-style)
* [ ] [Comments](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/03-code-quality/03-comments)
* [ ] [Ninja code](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/03-code-quality/04-ninja-code)
* [ ] [Automated testing with mocha](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/03-code-quality/05-testing-mocha)
* [ ] [Polyfills](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/03-code-quality/06-polyfills)

### Objects: the basics

* [ ] [Objects](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/04-object-basics/01-object)
* [ ] [Garbage collection](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/04-object-basics/02-garbage-collection)
* [ ] [Symbol type](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/04-object-basics/03-symbol)
* [ ] [Object methods, "this"](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/04-object-basics/04-object-methods)
* [ ] [Object to primitive conversion](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/04-object-basics/05-object-toprimitive)
* [ ] [Constructor, operator "new"](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/04-object-basics/06-constructor-new)

### Data types

* [ ] [Methods of primitives](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/05-data-types/01-primitives-methods)
* [ ] [Numbers](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/05-data-types/02-number)
* [ ] [Strings](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/05-data-types/03-string)
* [ ] [Arrays](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/05-data-types/04-array)
* [ ] [Array methods](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/05-data-types/05-array-methods)
* [ ] [Iterables](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/05-data-types/06-iterable)
* [ ] [Map, Set, WeakMap and WeakSet](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/05-data-types/07-map-set-weakmap-weakset)
* [ ] [Object.keys, values, entries](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/05-data-types/08-keys-values-entries)
* [ ] [Destructuring assignment](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/05-data-types/09-destructuring-assignment)
* [ ] [Date and time](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/05-data-types/10-date)
* [ ] [JSON methods, toJSON](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/05-data-types/11-json)

### Advanced working with functions

* [ ] [Recursion and stack](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/06-advanced-functions/01-recursion)
* [ ] [Rest parameters and spread operator](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/06-advanced-functions/02-rest-parameters-spread-operator)
* [ ] [Closure](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/06-advanced-functions/03-closure)
* [ ] [The old "var"](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/06-advanced-functions/04-var)
* [ ] [Global object](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/06-advanced-functions/05-global-object)
* [ ] [Function object, NFE](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/06-advanced-functions/06-function-object)
* [ ] [The "new Function" syntax](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/06-advanced-functions/07-new-function)
* [ ] [Scheduling: setTimeout and setInterval](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/06-advanced-functions/08-settimeout-setinterval)
* [ ] [Decorators and forwarding, call/apply](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/06-advanced-functions/09-call-apply-decorators)
* [ ] [Function binding](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/06-advanced-functions/10-bind)
* [ ] [Currying and partials](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/06-advanced-functions/11-currying-partials)
* [ ] [Arrow functions revisited](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/06-advanced-functions/12-arrow-functions)

### Object properties configuration

* [ ] [Property flags and descriptors](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/07-object-properties/01-property-descriptors)
* [ ] [Property getters and setters](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/07-object-properties/02-property-accessors)

### Prototypes, inheritance

* [ ] [Prototypal inheritance](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/08-prototypes/01-prototype-inheritance)
* [ ] [F.prototype](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/08-prototypes/02-function-prototype)
* [ ] [Native prototypes](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/08-prototypes/03-native-prototypes)
* [ ] [Prototype methods, objects without __proto__](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/08-prototypes/04-prototype-methods)

### Classes

* [ ] [Class basic syntax](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/09-classes/01-class)
* [ ] [Class inheritance](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/09-classes/02-class-inheritance)
* [ ] [Static properties and methods](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/09-classes/03-static-properties-methods)
* [ ] [Private and protected properties and methods](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/09-classes/04-private-protected-properties-methods)
* [ ] [Extending built-in classes](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/09-classes/05-extend-natives)
* [ ] [Class checking: "instanceof"](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/09-classes/06-instanceof)
* [ ] [Mixins](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/09-classes/07-mixins)

### Error handling

* [ ] [Error handling, "try..catch"](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/10-error-handling/1-try-catch)
* [ ] [Custom errors, extending Error](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/10-error-handling/2-custom-errors)

### Promises, async/await

* [ ] [Introduction: callbacks](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/11-async/01-callbacks)
* [ ] [Promise](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/11-async/02-promise-basics) API
* [ ] [Promises chaining](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/11-async/03-promise-chaining)
* [ ] [Error handling with promises](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/11-async/04-promise-error-handling)
* [ ] [Promise API](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/11-async/05-promise-api)
* [ ] [Promisification](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/11-async/06-promisify)
* [ ] [Microtasks and event loop](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/11-async/07-microtask-queue)
* [ ] [Async/await](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/11-async/08-async-await)

### Generators, advanced iteration

* [ ] [Generators](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/12-generators-iterators/1-generators)
* [ ] [Async iterators and generators](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/12-generators-iterators/2-async-iterators-generators)

### Modules

* [ ] [Modules, introduction](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/13-modules/01-modules-intro)
* [ ] [Export and Import](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/13-modules/02-import-export)
* [ ] [Dynamic imports](https://github.com/javascript-tutorial/en.javascript.info/blob/master/1-js/13-modules/03-modules-dynamic-imports)

## Browser: Document, Events, Interfaces

### Document

* [ ] [Browser environment, specs](https://github.com/javascript-tutorial/en.javascript.info/blob/master/2-ui/1-document/01-browser-environment)
* [ ] [DOM tree](https://github.com/javascript-tutorial/en.javascript.info/blob/master/2-ui/1-document/02-dom-nodes)
* [ ] [Walking the DOM](https://github.com/javascript-tutorial/en.javascript.info/blob/master/2-ui/1-document/03-dom-navigation)
* [ ] [Searching: getElement*, querySelector*](https://github.com/javascript-tutorial/en.javascript.info/blob/master/2-ui/1-document/04-searching-elements-dom)
* [ ] [Node properties: type, tag and contents](https://github.com/javascript-tutorial/en.javascript.info/blob/master/2-ui/1-document/05-basic-dom-node-properties)
* [ ] [Attributes and properties](https://github.com/javascript-tutorial/en.javascript.info/blob/master/2-ui/1-document/06-dom-attributes-and-properties)
* [ ] [Modifying the document](https://github.com/javascript-tutorial/en.javascript.info/blob/master/2-ui/1-document/07-modifying-document)
* [ ] [Styles and classes](https://github.com/javascript-tutorial/en.javascript.info/blob/master/2-ui/1-document/08-styles-and-classes)
* [ ] [Element size and scrolling](https://github.com/javascript-tutorial/en.javascript.info/blob/master/2-ui/1-document/09-size-and-scroll)
* [ ] [Window sizes and scrolling](https://github.com/javascript-tutorial/en.javascript.info/blob/master/2-ui/1-document/10-size-and-scroll-window)
* [ ] [Coordinates](https://github.com/javascript-tutorial/en.javascript.info/blob/master/2-ui/1-document/11-coordinates)

### Introduction to Events

* [ ] [Introduction to browser events](https://github.com/javascript-tutorial/en.javascript.info/blob/master/2-ui/2-events/01-introduction-browser-events)
* [ ] [Bubbling and capturing](https://github.com/javascript-tutorial/en.javascript.info/blob/master/2-ui/2-events/02-bubbling-and-capturing)
* [ ] [Event delegation](https://github.com/javascript-tutorial/en.javascript.info/blob/master/2-ui/2-events/03-event-delegation)
* [ ] [Browser default actions](https://github.com/javascript-tutorial/en.javascript.info/blob/master/2-ui/2-events/04-default-browser-action)
* [ ] [Dispatching custom events](https://github.com/javascript-tutorial/en.javascript.info/blob/master/2-ui/2-events/05-dispatch-events)

### UI Events

* [ ] [Mouse events basics](https://github.com/javascript-tutorial/en.javascript.info/blob/master/2-ui/3-event-details/1-mouse-events-basics)
* [ ] [Moving: mouseover/out, mouseenter/leave](https://github.com/javascript-tutorial/en.javascript.info/blob/master/2-ui/3-event-details/3-mousemove-mouseover-mouseout-mouseenter-mouseleave)
* [ ] [Drag'n'Drop with mouse events](https://github.com/javascript-tutorial/en.javascript.info/blob/master/2-ui/3-event-details/4-mouse-drag-and-drop)
* [ ] [Keyboard: keydown and keyup](https://github.com/javascript-tutorial/en.javascript.info/blob/master/2-ui/3-event-details/5-keyboard-events)
* [ ] [Scrolling](https://github.com/javascript-tutorial/en.javascript.info/blob/master/2-ui/3-event-details/8-onscroll)

### Forms, controls

* [ ] [Form properties and methods](https://github.com/javascript-tutorial/en.javascript.info/blob/master/2-ui/4-forms-controls/1-form-elements)
* [ ] [Focusing: focus/blur](https://github.com/javascript-tutorial/en.javascript.info/blob/master/2-ui/4-forms-controls/2-focus-blur)
* [ ] [Events: change, input, cut, copy, paste](https://github.com/javascript-tutorial/en.javascript.info/blob/master/2-ui/4-forms-controls/3-events-change-input)
* [ ] [Form submission: event and method submit](https://github.com/javascript-tutorial/en.javascript.info/blob/master/2-ui/4-forms-controls/4-forms-submit)

### Document and resource loading

* [ ] [Page: DOMContentLoaded, load, beforeunload, unload](https://github.com/javascript-tutorial/en.javascript.info/blob/master/2-ui/5-loading/01-onload-ondomcontentloaded)
* [ ] [Scripts: async, defer](https://github.com/javascript-tutorial/en.javascript.info/blob/master/2-ui/5-loading/02-script-async-defer)
* [ ] [Resource loading: onload and onerror](https://github.com/javascript-tutorial/en.javascript.info/blob/master/2-ui/5-loading/03-onload-onerror)

## Frames and windows

* [ ] [Popups and window methods](https://github.com/javascript-tutorial/en.javascript.info/blob/master/3-frames-and-windows/01-popup-windows)
* [ ] [Cross-window communication](https://github.com/javascript-tutorial/en.javascript.info/blob/master/3-frames-and-windows/03-cross-window-communication)
* [ ] [The clickjacking attack](https://github.com/javascript-tutorial/en.javascript.info/blob/master/3-frames-and-windows/06-clickjacking)

## Binary data, files

* [ ] [ArrayBuffer, binary arrays](https://github.com/javascript-tutorial/en.javascript.info/blob/master/4-binary/01-arraybuffer-binary-arrays)
* [ ] [TextDecoder and TextEncoder](https://github.com/javascript-tutorial/en.javascript.info/blob/master/4-binary/02-text-decoder)
* [ ] [Blob](https://github.com/javascript-tutorial/en.javascript.info/blob/master/4-binary/03-blob)
* [ ] [File and FileReader](https://github.com/javascript-tutorial/en.javascript.info/blob/master/4-binary/04-file)

## Network requests

* [ ] [Fetch: Basics](https://github.com/javascript-tutorial/en.javascript.info/blob/master/5-network/01-fetch-basics)
* [ ] [Fetch: Download progress](https://github.com/javascript-tutorial/en.javascript.info/blob/master/5-network/02-fetch-progress)
* [ ] [Fetch: Abort](https://github.com/javascript-tutorial/en.javascript.info/blob/master/5-network/03-fetch-abort)
* [ ] [Fetch: Cross-Origin Requests](https://github.com/javascript-tutorial/en.javascript.info/blob/master/5-network/04-fetch-crossorigin)
* [ ] [Fetch API](https://github.com/javascript-tutorial/en.javascript.info/blob/master/5-network/05-fetch-api)
* [ ] [URL objects](https://github.com/javascript-tutorial/en.javascript.info/blob/master/5-network/06-url)
* [ ] [XMLHttpRequest](https://github.com/javascript-tutorial/en.javascript.info/blob/master/5-network/07-xmlhttprequest)
* [ ] [WebSocket](https://github.com/javascript-tutorial/en.javascript.info/blob/master/5-network/08-websocket)

## Storing data in the browser

* [ ] [Cookies, document.cookie](https://github.com/javascript-tutorial/en.javascript.info/blob/master/6-data-storage/01-cookie)
* [ ] [LocalStorage, sessionStorage](https://github.com/javascript-tutorial/en.javascript.info/blob/master/6-data-storage/02-localstorage)
* [ ] [IndexedDB](https://github.com/javascript-tutorial/en.javascript.info/blob/master/6-data-storage/03-indexeddb)

## Animation

* [ ] [Bezier curve](https://github.com/javascript-tutorial/en.javascript.info/blob/master/7-animation/1-bezier-curve)
* [ ] [CSS-animations](https://github.com/javascript-tutorial/en.javascript.info/blob/master/7-animation/2-css-animations)
* [ ] [JavaScript animations](https://github.com/javascript-tutorial/en.javascript.info/blob/master/7-animation/3-js-animation)

## Web components

* [ ] [From the orbital height](https://github.com/javascript-tutorial/en.javascript.info/blob/master/8-web-components/1-webcomponents-intro)
* [ ] [Custom elements](https://github.com/javascript-tutorial/en.javascript.info/blob/master/8-web-components/2-custom-elements)
* [ ] [Shadow DOM](https://github.com/javascript-tutorial/en.javascript.info/blob/master/8-web-components/3-shadow-dom) and events
* [ ] [Template element](https://github.com/javascript-tutorial/en.javascript.info/blob/master/8-web-components/4-template-element)
* [ ] [Shadow DOM slots, composition](https://github.com/javascript-tutorial/en.javascript.info/blob/master/8-web-components/5-slots-composition)
* [ ] [Shadow DOM styling](https://github.com/javascript-tutorial/en.javascript.info/blob/master/8-web-components/6-shadow-dom-style)
* [ ] [Shadow DOM and events](https://github.com/javascript-tutorial/en.javascript.info/blob/master/8-web-components/7-shadow-dom-events)

## Regular expressions

* [ ] [Patterns and flags](https://github.com/javascript-tutorial/en.javascript.info/blob/master/9-regular-expressions/01-regexp-introduction)
* [ ] [Methods of RegExp and String](https://github.com/javascript-tutorial/en.javascript.info/blob/master/9-regular-expressions/02-regexp-methods)
* [ ] [Character classes](https://github.com/javascript-tutorial/en.javascript.info/blob/master/9-regular-expressions/03-regexp-character-classes)
* [ ] [Escaping, special characters](https://github.com/javascript-tutorial/en.javascript.info/blob/master/9-regular-expressions/04-regexp-escaping)
* [ ] [Sets and ranges [...]](https://github.com/javascript-tutorial/en.javascript.info/blob/master/9-regular-expressions/05-regexp-character-sets-and-ranges)
* [ ] [Quantifiers +, *, ? and {n}](https://github.com/javascript-tutorial/en.javascript.info/blob/master/9-regular-expressions/07-regexp-quantifiers)
* [ ] [Greedy and lazy quantifiers](https://github.com/javascript-tutorial/en.javascript.info/blob/master/9-regular-expressions/08-regexp-greedy-and-lazy)
* [ ] [Capturing groups](https://github.com/javascript-tutorial/en.javascript.info/blob/master/9-regular-expressions/09-regexp-groups)
* [ ] [Backreferences in pattern: \n and \k](https://github.com/javascript-tutorial/en.javascript.info/blob/master/9-regular-expressions/10-regexp-backreferences)
* [ ] [Alternation (OR) |](https://github.com/javascript-tutorial/en.javascript.info/blob/master/9-regular-expressions/11-regexp-alternation)
* [ ] [String start ^ and finish $](https://github.com/javascript-tutorial/en.javascript.info/blob/master/9-regular-expressions/12-regexp-anchors)
* [ ] [Multiline mode, flag "m"](https://github.com/javascript-tutorial/en.javascript.info/blob/master/9-regular-expressions/13-regexp-multiline-mode)
* [ ] [Lookahead and lookbehind](https://github.com/javascript-tutorial/en.javascript.info/blob/master/9-regular-expressions/14-regexp-lookahead-lookbehind)
* [ ] [Infinite backtracking problem](https://github.com/javascript-tutorial/en.javascript.info/blob/master/9-regular-expressions/15-regexp-infinite-backtracking-problem)
* [ ] [Unicode: flag "u"](https://github.com/javascript-tutorial/en.javascript.info/blob/master/9-regular-expressions/20-regexp-unicode)
* [ ] [Unicode character properties \p](https://github.com/javascript-tutorial/en.javascript.info/blob/master/9-regular-expressions/21-regexp-unicode-properties)
* [ ] [Sticky flag "y", searching at position](https://github.com/javascript-tutorial/en.javascript.info/blob/master/9-regular-expressions/22-regexp-sticky)

## Miscellaneous

* [ ] [Mutation observer](https://github.com/javascript-tutorial/en.javascript.info/blob/master/10-misc/12-mutation-observer)

Use the repository description to move to javascript-tutorial/pt.javascript.info, then read the translation instructions and checklist there. Choose one unchecked article, comment to claim it, translate it, and submit a pull request using the article title; consult BOT.md if the tracking helper is relevant.

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