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https://github.com/RisingStack/node-style-guide
A mostly reasonable approach to JavaScript - how we write Node.js at RisingStack
https://github.com/RisingStack/node-style-guide
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A mostly reasonable approach to JavaScript - how we write Node.js at RisingStack
- Host: GitHub
- URL: https://github.com/RisingStack/node-style-guide
- Owner: RisingStack
- Created: 2014-06-18T19:10:49.000Z (over 10 years ago)
- Default Branch: master
- Last Pushed: 2019-10-17T20:19:43.000Z (about 5 years ago)
- Last Synced: 2024-08-01T09:24:32.757Z (3 months ago)
- Size: 56.6 KB
- Stars: 993
- Watchers: 75
- Forks: 143
- Open Issues: 11
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
### Depraction notice
We are moving / moved our projects to use [Standard](https://github.com/feross/standard) - check it out!
# [RisingStack](http://risingstack.com) Node.js Style Guide() {
### Most of the content is taken from the [Airbnb styleguide](https://github.com/airbnb/javascript)
Heavily inspired by them as well:
- @caolan's [Node.js styleguide](http://caolanmcmahon.com/posts/nodejs_style_and_structure)
- @felixge's [Node.js styleguide](https://github.com/felixge/node-style-guide)
## Table of Contents
1. [Types](#types)
1. [Objects](#objects)
1. [Arrays](#arrays)
1. [Strings](#strings)
1. [Functions](#functions)
1. [Properties](#properties)
1. [Variables](#variables)
1. [Requires](#requires)
1. [Callbacks](#callbacks)
1. [Try-catch](#try-catch)
1. [Hoisting](#hoisting)
1. [Conditional Expressions & Equality](#conditional-expressions--equality)
1. [Blocks](#blocks)
1. [Comments](#comments)
1. [Whitespace](#whitespace)
1. [Commas](#commas)
1. [Semicolons](#semicolons)
1. [Type Casting & Coercion](#type-casting--coercion)
1. [Naming Conventions](#naming-conventions)
1. [Accessors](#accessors)
1. [Constructors](#constructors)
1. [Contributors](#contributors)
1. [License](#license)
## Types
- **Primitives**: When you access a primitive type you work directly on its value
+ `string`
+ `number`
+ `boolean`
+ `null`
+ `undefined`
```javascript
var foo = 1;
var bar = foo;
bar = 9;
console.log(foo, bar); // => 1, 9
```
- **Complex**: When you access a complex type you work on a reference to its value
+ `object`
+ `array`
+ `function`
```javascript
var foo = [1, 2];
var bar = foo;
bar[0] = 9;
console.log(foo[0], bar[0]); // => 9, 9
```
**[⬆ back to top](#table-of-contents)**
## Objects
- Use the literal syntax for object creation.
```javascript
// bad
var item = new Object();
// good
var item = {};
```
- Use readable synonyms in place of reserved words.
```javascript
// bad
var superman = {
class: 'alien'
};
// bad
var superman = {
klass: 'alien'
};
// good
var superman = {
type: 'alien'
};
```
**[⬆ back to top](#table-of-contents)**
## Arrays
- Use the literal syntax for array creation
```javascript
// bad
var items = new Array();
// good
var items = [];
```
- If you don't know array length use Array#push.
```javascript
var someStack = [];
// bad
someStack[someStack.length] = 'abracadabra';
// good
someStack.push('abracadabra');
```
- When you need to copy an array use Array#slice. [jsPerf](http://jsperf.com/converting-arguments-to-an-array/7)
```javascript
var len = items.length;
var itemsCopy = [];
var i;
// bad
for (i = 0; i < len; i++) {
itemsCopy[i] = items[i];
}
// good
itemsCopy = items.slice();
```
- To convert an array-like object to an array, use Array#slice.
```javascript
function trigger() {
var args = Array.prototype.slice.call(arguments);
...
}
```
**[⬆ back to top](#table-of-contents)**
## Strings
- Use single quotes `''` for strings
```javascript
// bad
var name = "Bob Parr";
// good
var name = 'Bob Parr';
// bad
var fullName = "Bob " + this.lastName;
// good
var fullName = 'Bob ' + this.lastName;
```
- Strings longer than 80 characters should be written across multiple lines using string concatenation.
- Note: If overused, long strings with concatenation could impact performance. [jsPerf](http://jsperf.com/ya-string-concat) & [Discussion](https://github.com/airbnb/javascript/issues/40)
```javascript
// bad
var errorMessage = 'This is a super long error that was thrown because of Batman. When you stop to think about how Batman had anything to do with this, you would get nowhere fast.';
// bad
var errorMessage = 'This is a super long error that was thrown because \
of Batman. When you stop to think about how Batman had anything to do \
with this, you would get nowhere \
fast.';
// good
var errorMessage = 'This is a super long error that was thrown because ' +
'of Batman. When you stop to think about how Batman had anything to do ' +
'with this, you would get nowhere fast.';
```
- When programmatically building up a string, use Array#join instead of string concatenation.
```javascript
var items;
var messages;
var length;
var i;
messages = [{
state: 'success',
message: 'This one worked.'
}, {
state: 'success',
message: 'This one worked as well.'
}, {
state: 'error',
message: 'This one did not work.'
}];
length = messages.length;
// bad
function inbox(messages) {
items = '
- ';
- ' + messages[i].message + ' ';
for (i = 0; i < length; i++) {
items += '
}
return items + '
}
// good
function inbox(messages) {
items = [];
for (i = 0; i < length; i++) {
items[i] = messages[i].message;
}
return '
- ' + items.join('
- ') + '
}
```
**[⬆ back to top](#table-of-contents)**
## Functions
- Function expressions:
```javascript
// anonymous function expression
var anonymous = function() {
return true;
};
// named function expression
var named = function named() {
return true;
};
// immediately-invoked function expression (IIFE)
(function() {
console.log('Welcome to the Internet. Please follow me.');
})();
```
- Never declare a function in a non-function block (if, while, etc). Assign the function to a variable instead.
```javascript
// bad
if (currentUser) {
function test() {
console.log('Nope.');
}
}
// good
var test;
if (currentUser) {
test = function test() {
console.log('Yup.');
};
}
```
- Never name a parameter `arguments`, this will take precedence over the `arguments` object that is given to every function scope.
```javascript
// bad
function nope(name, options, arguments) {
// ...stuff...
}
// good
function yup(name, options, args) {
// ...stuff...
}
```
**[⬆ back to top](#table-of-contents)**
## Properties
- Use dot notation when accessing properties.
```javascript
var luke = {
jedi: true,
age: 28
};
// bad
var isJedi = luke['jedi'];
// good
var isJedi = luke.jedi;
```
- Use subscript notation `[]` when accessing properties with a variable.
```javascript
var luke = {
jedi: true,
age: 28
};
function getProp(prop) {
return luke[prop];
}
var isJedi = getProp('jedi');
```
**[⬆ back to top](#table-of-contents)**
## Variables
- Always use `var` to declare variables. Not doing so will result in global variables. We want to avoid polluting the global namespace. Captain Planet warned us of that.
```javascript
// bad
superPower = new SuperPower();
// good
var superPower = new SuperPower();
```
- Declare each variable on a newline, with a `var` before each of them.
```javascript
// bad
var items = getItems(),
goSportsTeam = true,
dragonball = 'z';
// good
var items = getItems();
var goSportsTeam = true;
var dragonball = 'z';
```
- Declare unassigned variables last. This is helpful when later on you might need to assign a variable depending on one of the previous assigned variables.
```javascript
// bad
var i;
var items = getItems();
var dragonball;
var goSportsTeam = true;
var len;
// good
var items = getItems();
var goSportsTeam = true;
var dragonball;
var length;
var i;
```
- Avoid redundant variable names, use `Object` instead.
```javascript
// bad
var kaleidoscopeName = '..';
var kaleidoscopeLens = [];
var kaleidoscopeColors = [];
// good
var kaleidoscope = {
name: '..',
lens: [],
colors: []
};
```
- Assign variables at the top of their scope. This helps avoid issues with variable declaration and assignment hoisting related issues.
```javascript
// bad
function() {
test();
console.log('doing stuff..');
//..other stuff..
var name = getName();
if (name === 'test') {
return false;
}
return name;
}
// good
function() {
var name = getName();
test();
console.log('doing stuff..');
//..other stuff..
if (name === 'test') {
return false;
}
return name;
}
// bad
function() {
var name = getName();
if (!arguments.length) {
return false;
}
return true;
}
// good
function() {
if (!arguments.length) {
return false;
}
var name = getName();
return true;
}
```
## Requires
- Organize your node requires in the following order:
- core modules
- npm modules
- others
```javascript
// bad
var Car = require('./models/Car');
var async = require('async');
var http = require('http');
// good
var http = require('http');
var fs = require('fs');
var async = require('async');
var mongoose = require('mongoose');
var Car = require('./models/Car');
```
- Do not use the `.js` when requiring modules
```javascript
// bad
var Batmobil = require('./models/Car.js');
// good
var Batmobil = require('./models/Car');
```
**[⬆ back to top](#table-of-contents)**
## Callbacks
- Always check for errors in callbacks
```javascript
//bad
database.get('pokemons', function(err, pokemons) {
console.log(pokemons);
});
//good
database.get('drabonballs', function(err, drabonballs) {
if (err) {
// handle the error somehow, maybe return with a callback
return console.log(err);
}
console.log(drabonballs);
});
```
- Return on callbacks
```javascript
//bad
database.get('drabonballs', function(err, drabonballs) {
if (err) {
// if not return here
console.log(err);
}
// this line will be executed as well
console.log(drabonballs);
});
//good
database.get('drabonballs', function(err, drabonballs) {
if (err) {
// handle the error somehow, maybe return with a callback
return console.log(err);
}
console.log(drabonballs);
});
```
- Use descriptive arguments in your callback when it is an "interface" for others. It makes your code readable.
```javascript
// bad
function getAnimals(done) {
Animal.get(done);
}
// good
function getAnimals(done) {
Animal.get(function(err, animals) {
if(err) {
return done(err);
}
return done(null, {
dogs: animals.dogs,
cats: animals.cats
})
});
}
```
**[⬆ back to top](#table-of-contents)**
## Try catch
- Only throw in synchronous functions
Try-catch blocks cannot be used to wrap async code. They will bubble up to the top, and bring
down the entire process.
```javascript
//bad
function readPackageJson (callback) {
fs.readFile('package.json', function(err, file) {
if (err) {
throw err;
}
...
});
}
//good
function readPackageJson (callback) {
fs.readFile('package.json', function(err, file) {
if (err) {
return callback(err);
}
...
});
}
```
- Catch errors in sync calls
```javascript
//bad
var data = JSON.parse(jsonAsAString);
//good
var data;
try {
data = JSON.parse(jsonAsAString);
} catch (e) {
//handle error - hopefully not with a console.log ;)
console.log(e);
}
```
**[⬆ back to top](#table-of-contents)**
## Hoisting
- Variable declarations get hoisted to the top of their scope, their assignment does not.
```javascript
// we know this wouldn't work (assuming there
// is no notDefined global variable)
function example() {
console.log(notDefined); // => throws a ReferenceError
}
// creating a variable declaration after you
// reference the variable will work due to
// variable hoisting. Note: the assignment
// value of `true` is not hoisted.
function example() {
console.log(declaredButNotAssigned); // => undefined
var declaredButNotAssigned = true;
}
// The interpreter is hoisting the variable
// declaration to the top of the scope.
// Which means our example could be rewritten as:
function example() {
var declaredButNotAssigned;
console.log(declaredButNotAssigned); // => undefined
declaredButNotAssigned = true;
}
```
- Anonymous function expressions hoist their variable declaration, but not the function assignment.
```javascript
function example() {
console.log(anonymous); // => undefined
anonymous(); // => TypeError anonymous is not a function
var anonymous = function() {
console.log('anonymous function expression');
};
}
```
- Named function expressions hoist the variable declaration, but neither the function declaration nor the function body.
```javascript
function example() {
console.log(named); // => undefined
named(); // => TypeError named is not a function
superPower(); // => ReferenceError superPower is not defined
var named = function superPower() {
console.log('Flying');
};
}
// the same is true when the function name
// is the same as the variable name.
function example() {
console.log(named); // => undefined
named(); // => TypeError named is not a function
var named = function named() {
console.log('named');
}
}
```
- Function declarations hoist their name and the function body.
```javascript
function example() {
superPower(); // => Flying
function superPower() {
console.log('Flying');
}
}
```
- For more information refer to [JavaScript Scoping & Hoisting](http://www.adequatelygood.com/2010/2/JavaScript-Scoping-and-Hoisting) by [Ben Cherry](http://www.adequatelygood.com/)
**[⬆ back to top](#table-of-contents)**
## Conditional Expressions & Equality
- Use `===` and `!==` over `==` and `!=`.
- Conditional expressions are evaluated using coercion with the `ToBoolean` method and always follow these simple rules:
+ **Objects** evaluate to **true**
+ **Undefined** evaluates to **false**
+ **Null** evaluates to **false**
+ **Booleans** evaluate to **the value of the boolean**
+ **Numbers** evaluate to **false** if **+0, -0, or NaN**, otherwise **true**
+ **Strings** evaluate to **false** if an empty string `''`, otherwise **true**
```javascript
if ([0]) {
// true
// An array is an object, objects evaluate to true
}
```
- Use shortcuts.
```javascript
// bad
if (name !== '') {
// ...stuff...
}
// good
if (name) {
// ...stuff...
}
// bad
if (collection.length > 0) {
// ...stuff...
}
// good
if (collection.length) {
// ...stuff...
}
```
- For more information see [Truth Equality and JavaScript](http://javascriptweblog.wordpress.com/2011/02/07/truth-equality-and-javascript/#more-2108) by Angus Croll
**[⬆ back to top](#table-of-contents)**
## Blocks
- Use braces with all multi-line blocks.
```javascript
// bad
if (test)
return false;
// bad
if (test) return false;
// good
if (test) {
return false;
}
// bad
function() { return false; }
// good
function() {
return false;
}
```
**[⬆ back to top](#table-of-contents)**
## Comments
- Use `/** ... */` for multiline comments. Include a description, specify types and values for all parameters and return values.
```javascript
// bad
// make() returns a new element
// based on the passed in tag name
//
// @param tag
// @return element
function make(tag) {
// ...stuff...
return element;
}
// good
/**
* make() returns a new element
* based on the passed in tag name
*
* @param tag
* @return element
*/
function make(tag) {
// ...stuff...
return element;
}
```
- Use `//` for single line comments. Place single line comments on a newline above the subject of the comment. Put an empty line before the comment.
```javascript
// bad
var active = true; // is current tab
// good
// is current tab
var active = true;
// bad
function getType() {
console.log('fetching type...');
// set the default type to 'no type'
var type = this._type || 'no type';
return type;
}
// good
function getType() {
console.log('fetching type...');
// set the default type to 'no type'
var type = this._type || 'no type';
return type;
}
```
- Prefixing your comments with `FIXME` or `TODO` helps other developers quickly understand if you're pointing out a problem that needs to be revisited, or if you're suggesting a solution to the problem that needs to be implemented. These are different than regular comments because they are actionable. The actions are `FIXME -- need to figure this out` or `TODO -- need to implement`.
- Use `// FIXME:` to annotate problems
```javascript
function Calculator() {
// FIXME: shouldn't use a global here
total = 0;
return this;
}
```
- Use `// TODO:` to annotate solutions to problems
```javascript
function Calculator() {
// TODO: total should be configurable by an options param
this.total = 0;
return this;
}
```
**[⬆ 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'
});
```
- 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.
```javascript
// 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').class('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')
.class('led', true)
.attr('width', (radius + margin) * 2)
.append('svg:g')
.attr('transform', 'translate(' + (radius + margin) + ',' + (radius + margin) + ')')
.call(tron.led);
```
**[⬆ back to top](#table-of-contents)**
## Commas
- Leading commas: **Nope.**
```javascript
// 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
;(function() {
var name = 'Skywalker';
return name;
})();
```
**[⬆ 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);
};
```
**[⬆ 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)**
**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/)
- [Third Party JavaScript](http://manning.com/vinegar/) - Ben Vinegar and Anton Kovalyov
**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)
**[⬆ back to top](#table-of-contents)**
## The JavaScript Style Guide Guide
- [Reference](https://github.com/airbnb/javascript/wiki/The-JavaScript-Style-Guide-Guide)
## Contributors
- [View Contributors](https://github.com/airbnb/javascript/graphs/contributors)
## License
(The MIT License)
Copyright (c) 2014 RisingStack
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)**
# };