Coding Style(编码风格)
Basic Rules(基本原则)
Component(组件规范)
Class 与 React.createClass方法
尽可能地使用ES6中的类的语法,除非有特殊的对于Mixin的需求。
// bad const Listing = React.createClass({ render() { return <div />; } }); // good class Listing extends React.Component { render() { return <div />; } }
组件命名
// bad const reservationCard = require('./ReservationCard'); // good const ReservationCard = require('./ReservationCard'); // bad const ReservationItem = <ReservationCard />; // good const reservationItem = <ReservationCard />;
Declaration(声明)
不要使用displayName来命名组件,而使用引用。
// bad export default React.createClass({ displayName: 'ReservationCard',// stuff goes here }); // good export default class ReservationCard extends React.Component { }
Props
对于Props的命名使用camelCase。
// bad <Foo UserName="hello" phone_number={12345678} /> // good <Foo userName="hello" phoneNumber={12345678} />
将Props或者State的声明写在类外。
import React,{ Component,PropTypes } from 'react'; const propTypes = { id: PropTypes.number.isrequired,url: PropTypes.string.isrequired,text: PropTypes.string,}; const defaultProps = { text: 'Hello World',}; export default class Link extends Component { static methodsAreOk() { return true; } render() { return <a href={this.props.url} data-id={this.props.id}>{this.props.text}</a> } } Link.propTypes = propTypes; Link.defaultProps = defaultProps;
JSX(JSX规范)
Alignment(对齐)
跟随如下的JSX的语法
// bad <Foo superLongParam="bar" anotherSuperLongParam="baz" /> // good <Foo superLongParam="bar" anotherSuperLongParam="baz" /> // if props fit in one line then keep it on the same line <Foo bar="bar" /> // children get indented normally <Foo superLongParam="bar" anotherSuperLongParam="baz" > <Spazz /> </Foo>
Quotes
// bad <Foo bar='bar' /> // good <Foo bar="bar" /> // bad <Foo style={{ left: "20px" }} /> // good <Foo style={{ left: '20px' }} />
Spacing(空格)
在自闭合的标签中仅使用单空格。
// bad <Foo/> // very bad <Foo /> // bad <Foo /> // good <Foo />
多段
当JSX包含多行代码时,将它们包含在小括号中。
/// bad render() { return <MyComponent className="long body" foo="bar"> <MyChild /> </MyComponent>; } // good render() { return ( <MyComponent className="long body" foo="bar"> <MyChild /> </MyComponent> ); } // good,when single line render() { const body = <div>hello</div>; return <MyComponent>{body}</MyComponent>; }
Methods
Naming(方法命名)
对于一个React组件的内部方法,不要使用下划线作为前缀。
// bad React.createClass({ _onClickSubmit() { // do stuff } // other stuff }); // good class extends React.Component { onClickSubmit() { // do stuff } // other stuff });
Ordering(顺序)
React.Component子类
constructor
optional static methods
getChildContext
componentWillMount
componentDidMount
componentWillReceiveProps
shouldComponentUpdate
componentWillUpdate
componentDidUpdate
10. componentWillUnmount
11. clickHandlers or eventHandlers like onClickSubmit() or onChangeDescription()
12. getter methods for render like getSelectReason() or getFooterContent()
13. Optional render methods like renderNavigation() or renderProfilePicture()
14. renderReact.createClass
displayName
propTypes
contextTypes
childContextTypes
mixins
statics
defaultProps
getDefaultProps
getInitialState
10. getChildContext
11. componentWillMount
12. componentDidMount
13. componentWillReceiveProps
14. shouldComponentUpdate
15. componentWillUpdate
16. componentDidUpdate
17. componentWillUnmount
18. clickHandlers or eventHandlers like onClickSubmit() or onChangeDescription()
19. getter methods for render like getSelectReason() or getFooterContent()
20. Optional render methods like renderNavigation() or renderProfilePicture()21. render