**[⬆ back to top](#table-of-contents)** ## Whitespace - Use soft tabs set to 2 spaces. ```javascript // bad function(){∙∙∙∙var name} // bad function(){∙var name} // good function(){∙∙var name} ``` - Place 1 space before the leading brace. ```javascript // bad function test(){console.log('test')} // good function test(){console.log('test')} // bad dog.set('attr',{age: '1 year', breed: 'Bernese Mountain Dog' }); // good dog.set('attr',{age: '1 year', breed: 'Bernese Mountain Dog' }); ``` - Place 1 space before the opening parenthesis in control statements (`if`, `while` etc.). Place no space before the argument list in function calls and declarations. ```javascript // bad if(isJedi){fight ()} // good if (isJedi){fight()} // bad function fight (){console.log ('Swooosh!')} // good function fight(){console.log('Swooosh!')} ``` - Set off operators with spaces. ```javascript // bad var x=y+5; // good var x = y + 5; ``` - End files with a single newline character. ```javascript // bad (function(global){// ...stuff... })(this); ``` ```javascript // bad (function(global){// ...stuff... })(this);↵ ↵ ``` ```javascript // good (function(global){// ...stuff... })(this);↵ ``` - Use indentation when making long method chains. Use a leading dot, which emphasizes that the line is a method call, not a new statement. ```javascript // bad $('#items').find('.selected').highlight().end().find('.open').updateCount(); // bad $('#items'). find('.selected'). highlight(). end(). find('.open'). updateCount(); // good $('#items') .find('.selected') .highlight() .end() .find('.open') .updateCount(); // bad var leds = stage.selectAll('.led').data(data).enter().append('svg:svg').classed('led', true) .attr('width', (radius + margin) * 2).append('svg:g') .attr('transform', 'translate(' + (radius + margin) + ',' + (radius + margin) + ')') .call(tron.led); // good var leds = stage.selectAll('.led') .data(data) .enter().append('svg:svg') .classed('led', true) .attr('width', (radius + margin) * 2) .append('svg:g') .attr('transform', 'translate(' + (radius + margin) + ',' + (radius + margin) + ')') .call(tron.led); ``` - Leave a blank line after blocks and before the next statement ```javascript // bad if (foo){return bar} return baz; // good if (foo){return bar} return baz; // bad var obj ={foo: function(){}, bar: function(){} }; return obj; // good var obj ={foo: function(){}, bar: function(){} }; return obj; ``` **[⬆ back to top](#table-of-contents)** ## Commas - Leading commas: **Nope.** ```javascript // bad var story = [ once , upon , aTime ]; // good var story = [ once, upon, aTime ]; // bad var hero ={firstName: 'Bob' , lastName: 'Parr' , heroName: 'Mr. Incredible' , superPower: 'strength' }; // good var hero ={firstName: 'Bob', lastName: 'Parr', heroName: 'Mr. Incredible', superPower: 'strength' }; ``` - Additional trailing comma: **Nope.** This can cause problems with IE6/7 and IE9 if it's in quirksmode. Also, in some implementations of ES3 would add length to an array if it had an additional trailing comma. This was clarified in ES5 ([source](http://es5.github.io/#D)): > Edition 5 clarifies the fact that a trailing comma at the end of an ArrayInitialiser does not add to the length of the array. This is not a semantic change from Edition 3 but some implementations may have previously misinterpreted this. ```javascript // bad var hero ={firstName: 'Kevin', lastName: 'Flynn', }; var heroes = [ 'Batman', 'Superman', ]; // good var hero ={firstName: 'Kevin', lastName: 'Flynn' }; var heroes = [ 'Batman', 'Superman' ]; ``` **[⬆ back to top](#table-of-contents)** ## Semicolons - **Yup.** ```javascript // bad (function(){var name = 'Skywalker' return name })() // good (function(){var name = 'Skywalker'; return name})(); // good (guards against the function becoming an argument when two files with IIFEs are concatenated) ;(function(){var name = 'Skywalker'; return name})(); ``` [Read more](http://stackoverflow.com/a/7365214/1712802). **[⬆ back to top](#table-of-contents)** ## Type Casting & Coercion - Perform type coercion at the beginning of the statement. - Strings: ```javascript // => this.reviewScore = 9; // bad var totalScore = this.reviewScore + ''; // good var totalScore = '' + this.reviewScore; // bad var totalScore = '' + this.reviewScore + ' total score'; // good var totalScore = this.reviewScore + ' total score'; ``` - Use `parseInt` for Numbers and always with a radix for type casting. ```javascript var inputValue = '4'; // bad var val = new Number(inputValue); // bad var val = +inputValue; // bad var val = inputValue >> 0; // bad var val = parseInt(inputValue); // good var val = Number(inputValue); // good var val = parseInt(inputValue, 10); ``` - If for whatever reason you are doing something wild and `parseInt` is your bottleneck and need to use Bitshift for [performance reasons](http://jsperf.com/coercion-vs-casting/3), leave a comment explaining why and what you're doing. ```javascript // good /** * parseInt was the reason my code was slow. * Bitshifting the String to coerce it to a * Number made it a lot faster. */ var val = inputValue >> 0; ``` - **Note:** Be careful when using bitshift operations. Numbers are represented as [64-bit values](http://es5.github.io/#x4.3.19), but Bitshift operations always return a 32-bit integer ([source](http://es5.github.io/#x11.7)). Bitshift can lead to unexpected behavior for integer values larger than 32 bits. [Discussion](https://github.com/airbnb/javascript/issues/109). Largest signed 32-bit Int is 2,147,483,647: ```javascript 2147483647 >> 0 //=> 2147483647 2147483648 >> 0 //=> -2147483648 2147483649 >> 0 //=> -2147483647 ``` - Booleans: ```javascript var age = 0; // bad var hasAge = new Boolean(age); // good var hasAge = Boolean(age); // good var hasAge = !!age; ``` **[⬆ back to top](#table-of-contents)** ## Naming Conventions - Avoid single letter names. Be descriptive with your naming. ```javascript // bad function q(){// ...stuff... } // good function query(){// ..stuff.. } ``` - Use camelCase when naming objects, functions, and instances. ```javascript // bad var OBJEcttsssss ={}; var this_is_my_object ={}; function c(){} var u = new user({name: 'Bob Parr' }); // good var thisIsMyObject ={}; function thisIsMyFunction(){} var user = new User({name: 'Bob Parr' }); ``` - Use PascalCase when naming constructors or classes. ```javascript // bad function user(options){this.name = options.name} var bad = new user({name: 'nope' }); // good function User(options){this.name = options.name} var good = new User({name: 'yup' }); ``` - Use a leading underscore `_` when naming private properties. ```javascript // bad this.__firstName__ = 'Panda'; this.firstName_ = 'Panda'; // good this._firstName = 'Panda'; ``` - When saving a reference to `this` use `_this`. ```javascript // bad function(){var self = this; return function(){console.log(self)}} // bad function(){var that = this; return function(){console.log(that)}} // good function(){var _this = this; return function(){console.log(_this)}} ``` - Name your functions. This is helpful for stack traces. ```javascript // bad var log = function(msg){console.log(msg)}; // good var log = function log(msg){console.log(msg)}; ``` - **Note:** IE8 and below exhibit some quirks with named function expressions. See [http://kangax.github.io/nfe/](http://kangax.github.io/nfe/) for more info. - If your file exports a single class, your filename should be exactly the name of the class. ```javascript // file contents class CheckBox{// ... } module.exports = CheckBox; // in some other file // bad var CheckBox = require('./checkBox'); // bad var CheckBox = require('./check_box'); // good var CheckBox = require('./CheckBox'); ``` **[⬆ back to top](#table-of-contents)** ## Accessors - Accessor functions for properties are not required. - If you do make accessor functions use getVal() and setVal('hello'). ```javascript // bad dragon.age(); // good dragon.getAge(); // bad dragon.age(25); // good dragon.setAge(25); ``` - If the property is a boolean, use isVal() or hasVal(). ```javascript // bad if (!dragon.age()){return false} // good if (!dragon.hasAge()){return false} ``` - It's okay to create get() and set() functions, but be consistent. ```javascript function Jedi(options){options || (options ={}); var lightsaber = options.lightsaber || 'blue'; this.set('lightsaber', lightsaber)} Jedi.prototype.set = function(key, val){this[key] = val}; Jedi.prototype.get = function(key){return this[key]}; ``` **[⬆ back to top](#table-of-contents)** ## Constructors - Assign methods to the prototype object, instead of overwriting the prototype with a new object. Overwriting the prototype makes inheritance impossible: by resetting the prototype you'll overwrite the base! ```javascript function Jedi(){console.log('new jedi')} // bad Jedi.prototype ={fight: function fight(){console.log('fighting')}, block: function block(){console.log('blocking')} }; // good Jedi.prototype.fight = function fight(){console.log('fighting')}; Jedi.prototype.block = function block(){console.log('blocking')}; ``` - Methods can return `this` to help with method chaining. ```javascript // bad Jedi.prototype.jump = function(){this.jumping = true; return true}; Jedi.prototype.setHeight = function(height){this.height = height}; var luke = new Jedi(); luke.jump(); // => true luke.setHeight(20); // => undefined // good Jedi.prototype.jump = function(){this.jumping = true; return this}; Jedi.prototype.setHeight = function(height){this.height = height; return this}; var luke = new Jedi(); luke.jump() .setHeight(20); ``` - It's okay to write a custom toString() method, just make sure it works successfully and causes no side effects. ```javascript function Jedi(options){options || (options ={}); this.name = options.name || 'no name'} Jedi.prototype.getName = function getName(){return this.name}; Jedi.prototype.toString = function toString(){return 'Jedi - ' + this.getName()}; ``` **[⬆ back to top](#table-of-contents)** ## Events - When attaching data payloads to events (whether DOM events or something more proprietary like Backbone events), pass a hash instead of a raw value. This allows a subsequent contributor to add more data to the event payload without finding and updating every handler for the event. For example, instead of: ```js // bad $(this).trigger('listingUpdated', listing.id); ... $(this).on('listingUpdated', function(e, listingId){// do something with listingId }); ``` prefer: ```js // good $(this).trigger('listingUpdated',{listingId : listing.id }); ... $(this).on('listingUpdated', function(e, data){// do something with data.listingId }); ``` **[⬆ back to top](#table-of-contents)** ## Modules - The module should start with a `!`. This ensures that if a malformed module forgets to include a final semicolon there aren't errors in production when the scripts get concatenated. [Explanation](https://github.com/airbnb/javascript/issues/44#issuecomment-13063933) - The file should be named with camelCase, live in a folder with the same name, and match the name of the single export. - Add a method called `noConflict()` that sets the exported module to the previous version and returns this one. - Always declare `'use strict';` at the top of the module. ```javascript // fancyInput/fancyInput.js !function(global){'use strict'; var previousFancyInput = global.FancyInput; function FancyInput(options){this.options = options ||{}} FancyInput.noConflict = function noConflict(){global.FancyInput = previousFancyInput; return FancyInput}; global.FancyInput = FancyInput}(this); ``` **[⬆ back to top](#table-of-contents)** ## jQuery - Prefix jQuery object variables with a `$`. ```javascript // bad var sidebar = $('.sidebar'); // good var $sidebar = $('.sidebar'); ``` - Cache jQuery lookups. ```javascript // bad function setSidebar(){$('.sidebar').hide(); // ...stuff... $('.sidebar').css({'background-color': 'pink' })} // good function setSidebar(){var $sidebar = $('.sidebar'); $sidebar.hide(); // ...stuff... $sidebar.css({'background-color': 'pink' })} ``` - For DOM queries use Cascading `$('.sidebar ul')` or parent > child `$('.sidebar > ul')`. [jsPerf](http://jsperf.com/jquery-find-vs-context-sel/16) - Use `find` with scoped jQuery object queries. ```javascript // bad $('ul', '.sidebar').hide(); // bad $('.sidebar').find('ul').hide(); // good $('.sidebar ul').hide(); // good $('.sidebar > ul').hide(); // good $sidebar.find('ul').hide(); ``` **[⬆ back to top](#table-of-contents)** ## ECMAScript 5 Compatibility - Refer to [Kangax](https://twitter.com/kangax/)'s ES5 [compatibility table](http://kangax.github.com/es5-compat-table/). **[⬆ back to top](#table-of-contents)** ## Testing - **Yup.** ```javascript function(){return true} ``` **[⬆ back to top](#table-of-contents)** ## Performance - [On Layout & Web Performance](http://kellegous.com/j/2013/01/26/layout-performance/) - [String vs Array Concat](http://jsperf.com/string-vs-array-concat/2) - [Try/Catch Cost In a Loop](http://jsperf.com/try-catch-in-loop-cost) - [Bang Function](http://jsperf.com/bang-function) - [jQuery Find vs Context, Selector](http://jsperf.com/jquery-find-vs-context-sel/13) - [innerHTML vs textContent for script text](http://jsperf.com/innerhtml-vs-textcontent-for-script-text) - [Long String Concatenation](http://jsperf.com/ya-string-concat) - Loading... **[⬆ back to top](#table-of-contents)** ## Resources **Read This** - [Annotated ECMAScript 5.1](http://es5.github.com/) **Tools** - Code Style Linters + [JSHint](http://www.jshint.com/) - [Airbnb Style .jshintrc](https://github.com/airbnb/javascript/blob/master/linters/jshintrc) + [JSCS](https://github.com/jscs-dev/node-jscs) - [Airbnb Style Preset](https://github.com/jscs-dev/node-jscs/blob/master/presets/airbnb.json) **Other Styleguides** - [Google JavaScript Style Guide](http://google-styleguide.googlecode.com/svn/trunk/javascriptguide.xml) - [jQuery Core Style Guidelines](http://docs.jquery.com/JQuery_Core_Style_Guidelines) - [Principles of Writing Consistent, Idiomatic JavaScript](https://github.com/rwldrn/idiomatic.js/) - [JavaScript Standard Style](https://github.com/feross/standard) **Other Styles** - [Naming this in nested functions](https://gist.github.com/4135065) - Christian Johansen - [Conditional Callbacks](https://github.com/airbnb/javascript/issues/52) - Ross Allen - [Popular JavaScript Coding Conventions on Github](http://sideeffect.kr/popularconvention/#javascript) - JeongHoon Byun - [Multiple var statements in JavaScript, not superfluous](http://benalman.com/news/2012/05/multiple-var-statements-javascript/) - Ben Alman **Further Reading** - [Understanding JavaScript Closures](http://javascriptweblog.wordpress.com/2010/10/25/understanding-javascript-closures/) - Angus Croll - [Basic JavaScript for the impatient programmer](http://www.2ality.com/2013/06/basic-javascript.html) - Dr. Axel Rauschmayer - [You Might Not Need jQuery](http://youmightnotneedjquery.com/) - Zack Bloom & Adam Schwartz - [ES6 Features](https://github.com/lukehoban/es6features) - Luke Hoban - [Frontend Guidelines](https://github.com/bendc/frontend-guidelines) - Benjamin De Cock **Books** - [JavaScript: The Good Parts](http://www.amazon.com/JavaScript-Good-Parts-Douglas-Crockford/dp/0596517742) - Douglas Crockford - [JavaScript Patterns](http://www.amazon.com/JavaScript-Patterns-Stoyan-Stefanov/dp/0596806752) - Stoyan Stefanov - [Pro JavaScript Design Patterns](http://www.amazon.com/JavaScript-Design-Patterns-Recipes-Problem-Solution/dp/159059908X) - Ross Harmes and Dustin Diaz - [High Performance Web Sites: Essential Knowledge for Front-End Engineers](http://www.amazon.com/High-Performance-Web-Sites-Essential/dp/0596529309) - Steve Souders - [Maintainable JavaScript](http://www.amazon.com/Maintainable-JavaScript-Nicholas-C-Zakas/dp/1449327680) - Nicholas C. Zakas - [JavaScript Web Applications](http://www.amazon.com/JavaScript-Web-Applications-Alex-MacCaw/dp/144930351X) - Alex MacCaw - [Pro JavaScript Techniques](http://www.amazon.com/Pro-JavaScript-Techniques-John-Resig/dp/1590597273) - John Resig - [Smashing Node.js: JavaScript Everywhere](http://www.amazon.com/Smashing-Node-js-JavaScript-Everywhere-Magazine/dp/1119962595) - Guillermo Rauch - [Secrets of the JavaScript Ninja](http://www.amazon.com/Secrets-JavaScript-Ninja-John-Resig/dp/193398869X) - John Resig and Bear Bibeault - [Human JavaScript](http://humanjavascript.com/) - Henrik Joreteg - [Superhero.js](http://superherojs.com/) - Kim Joar Bekkelund, Mads Mobæk, & Olav Bjorkoy - [JSBooks](http://jsbooks.revolunet.com/) - Julien Bouquillon - [Third Party JavaScript](http://manning.com/vinegar/) - Ben Vinegar and Anton Kovalyov - [Effective JavaScript: 68 Specific Ways to Harness the Power of JavaScript](http://amzn.com/0321812182) - David Herman - [Eloquent JavaScript](http://eloquentjavascript.net) - Marijn Haverbeke - [You Don't Know JS](https://github.com/getify/You-Dont-Know-JS) - Kyle Simpson **Blogs** - [DailyJS](http://dailyjs.com/) - [JavaScript Weekly](http://javascriptweekly.com/) - [JavaScript, JavaScript...](http://javascriptweblog.wordpress.com/) - [Bocoup Weblog](http://weblog.bocoup.com/) - [Adequately Good](http://www.adequatelygood.com/) - [NCZOnline](http://www.nczonline.net/) - [Perfection Kills](http://perfectionkills.com/) - [Ben Alman](http://benalman.com/) - [Dmitry Baranovskiy](http://dmitry.baranovskiy.com/) - [Dustin Diaz](http://dustindiaz.com/) - [nettuts](http://net.tutsplus.com/?s=javascript) **Podcasts** - [JavaScript Jabber](http://devchat.tv/js-jabber/) **[⬆ back to top](#table-of-contents)** ## In the Wild This is a list of organizations that are using this style guide. Send us a pull request or open an issue and we'll add you to the list. - **Aan Zee**: [AanZee/javascript](https://github.com/AanZee/javascript) - **Adult Swim**: [adult-swim/javascript](https://github.com/adult-swim/javascript) - **Airbnb**: [airbnb/javascript](https://github.com/airbnb/javascript) - **American Insitutes for Research**: [AIRAST/javascript](https://github.com/AIRAST/javascript) - **Apartmint**: [apartmint/javascript](https://github.com/apartmint/javascript) - **Avalara**: [avalara/javascript](https://github.com/avalara/javascript) - **Compass Learning**: [compasslearning/javascript-style-guide](https://github.com/compasslearning/javascript-style-guide) - **DailyMotion**: [dailymotion/javascript](https://github.com/dailymotion/javascript) - **Digitpaint** [digitpaint/javascript](https://github.com/digitpaint/javascript) - **Evernote**: [evernote/javascript-style-guide](https://github.com/evernote/javascript-style-guide) - **ExactTarget**: [ExactTarget/javascript](https://github.com/ExactTarget/javascript) - **Flexberry**: [Flexberry/javascript-style-guide](https://github.com/Flexberry/javascript-style-guide) - **Gawker Media**: [gawkermedia/javascript](https://github.com/gawkermedia/javascript) - **GeneralElectric**: [GeneralElectric/javascript](https://github.com/GeneralElectric/javascript) - **GoodData**: [gooddata/gdc-js-style](https://github.com/gooddata/gdc-js-style) - **Grooveshark**: [grooveshark/javascript](https://github.com/grooveshark/javascript) - **How About We**: [howaboutwe/javascript](https://github.com/howaboutwe/javascript) - **InfoJobs**: [InfoJobs/JavaScript-Style-Guide](https://github.com/InfoJobs/JavaScript-Style-Guide) - **Intent Media**: [intentmedia/javascript](https://github.com/intentmedia/javascript) - **Jam3**: [Jam3/Javascript-Code-Conventions](https://github.com/Jam3/Javascript-Code-Conventions) - **JSSolutions**: [JSSolutions/javascript](https://github.com/JSSolutions/javascript) - **Kinetica Solutions**: [kinetica/javascript](https://github.com/kinetica/javascript) - **Mighty Spring**: [mightyspring/javascript](https://github.com/mightyspring/javascript) - **MinnPost**: [MinnPost/javascript](https://github.com/MinnPost/javascript) - **ModCloth**: [modcloth/javascript](https://github.com/modcloth/javascript) - **Money Advice Service**: [moneyadviceservice/javascript](https://github.com/moneyadviceservice/javascript) - **Muber**: [muber/javascript](https://github.com/muber/javascript) - **National Geographic**: [natgeo/javascript](https://github.com/natgeo/javascript) - **National Park Service**: [nationalparkservice/javascript](https://github.com/nationalparkservice/javascript) - **Nimbl3**: [nimbl3/javascript](https://github.com/nimbl3/javascript) - **Nordic Venture Family**: [CodeDistillery/javascript](https://github.com/CodeDistillery/javascript) - **Orion Health**: [orionhealth/javascript](https://github.com/orionhealth/javascript) - **Peerby**: [Peerby/javascript](https://github.com/Peerby/javascript) - **Razorfish**: [razorfish/javascript-style-guide](https://github.com/razorfish/javascript-style-guide) - **reddit**: [reddit/styleguide/javascript](https://github.com/reddit/styleguide/tree/master/javascript) - **REI**: [reidev/js-style-guide](https://github.com/reidev/js-style-guide) - **Ripple**: [ripple/javascript-style-guide](https://github.com/ripple/javascript-style-guide) - **SeekingAlpha**: [seekingalpha/javascript-style-guide](https://github.com/seekingalpha/javascript-style-guide) - **Shutterfly**: [shutterfly/javascript](https://github.com/shutterfly/javascript) - **StudentSphere**: [studentsphere/javascript](https://github.com/studentsphere/javascript) - **Target**: [target/javascript](https://github.com/target/javascript) - **TheLadders**: [TheLadders/javascript](https://github.com/TheLadders/javascript) - **T4R Technology**: [T4R-Technology/javascript](https://github.com/T4R-Technology/javascript) - **Userify**: [userify/javascript](https://github.com/userify/javascript) - **VoxFeed**: [VoxFeed/javascript-style-guide](https://github.com/VoxFeed/javascript-style-guide) - **Weggo**: [Weggo/javascript](https://github.com/Weggo/javascript) - **Zillow**: [zillow/javascript](https://github.com/zillow/javascript) - **ZocDoc**: [ZocDoc/javascript](https://github.com/ZocDoc/javascript) ## Translation This style guide is also available in other languages: - ![br](https://raw.githubusercontent.com/gosquared/flags/master/flags/flags/shiny/24/Brazil.png) **Brazilian Portuguese**: [armoucar/javascript-style-guide](https://github.com/armoucar/javascript-style-guide) - ![bg](https://raw.githubusercontent.com/gosquared/flags/master/flags/flags/shiny/24/Bulgaria.png) **Bulgarian**: [borislavvv/javascript](https://github.com/borislavvv/javascript) - ![ca](https://raw.githubusercontent.com/fpmweb/javascript-style-guide/master/img/catala.png) **Catalan**: [fpmweb/javascript-style-guide](https://github.com/fpmweb/javascript-style-guide) - ![tw](https://raw.githubusercontent.com/gosquared/flags/master/flags/flags/shiny/24/Taiwan.png) **Chinese(Traditional)**: [jigsawye/javascript](https://github.com/jigsawye/javascript) - ![cn](https://raw.githubusercontent.com/gosquared/flags/master/flags/flags/shiny/24/China.png) **Chinese(Simplified)**: [adamlu/javascript-style-guide](https://github.com/adamlu/javascript-style-guide) - ![fr](https://raw.githubusercontent.com/gosquared/flags/master/flags/flags/shiny/24/France.png) **French**: [nmussy/javascript-style-guide](https://github.com/nmussy/javascript-style-guide) - ![de](https://raw.githubusercontent.com/gosquared/flags/master/flags/flags/shiny/24/Germany.png) **German**: [timofurrer/javascript-style-guide](https://github.com/timofurrer/javascript-style-guide) - ![it](https://raw.githubusercontent.com/gosquared/flags/master/flags/flags/shiny/24/Italy.png) **Italian**: [sinkswim/javascript-style-guide](https://github.com/sinkswim/javascript-style-guide) - ![jp](https://raw.githubusercontent.com/gosquared/flags/master/flags/flags/shiny/24/Japan.png) **Japanese**: [mitsuruog/javacript-style-guide](https://github.com/mitsuruog/javacript-style-guide) - ![kr](https://raw.githubusercontent.com/gosquared/flags/master/flags/flags/shiny/24/South-Korea.png) **Korean**: [tipjs/javascript-style-guide](https://github.com/tipjs/javascript-style-guide) - ![pl](https://raw.githubusercontent.com/gosquared/flags/master/flags/flags/shiny/24/Poland.png) **Polish**: [mjurczyk/javascript](https://github.com/mjurczyk/javascript) - ![ru](https://raw.githubusercontent.com/gosquared/flags/master/flags/flags/shiny/24/Russia.png) **Russian**: [uprock/javascript](https://github.com/uprock/javascript) - ![es](https://raw.githubusercontent.com/gosquared/flags/master/flags/flags/shiny/24/Spain.png) **Spanish**: [paolocarrasco/javascript-style-guide](https://github.com/paolocarrasco/javascript-style-guide) - ![th](https://raw.githubusercontent.com/gosquared/flags/master/flags/flags/shiny/24/Thailand.png) **Thai**: [lvarayut/javascript-style-guide](https://github.com/lvarayut/javascript-style-guide) ## The JavaScript Style Guide Guide - [Reference](https://github.com/airbnb/javascript/wiki/The-JavaScript-Style-Guide-Guide) ## Chat With Us About JavaScript - Find us on [gitter](https://gitter.im/airbnb/javascript). ## Contributors - [View Contributors](https://github.com/airbnb/javascript/graphs/contributors) ## License (The MIT License) Copyright (c) 2014 Airbnb Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. **[⬆ back to top](#table-of-contents)** # };