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  • react-学习笔记

    1.安装命令:

      npm install -g create-react-app

      create-ract-app projectName

      cd projectName

      npm start;

    2.安装react-router

      npm isntall -S react-router

      //引入

      import {Router,Route,hasHistory} from 'react-router';

      render((

        <Router history={hasHistory}>

          <Route path='/' component={App} />  

        </Router>

      ),document.getElementById('app'));

    3.安装jquery

      npm install --save-dev jquery

      import $ from 'jquery'

      

    4.路由嵌套

      <Router history={hashHistory}>

        <Route  path="/" component={APP}>

          <Route  path = '/exm' component={Exam} />

        </Route>

      </Router>

        在跟路由下,用this.props.children获取

    5.Link

      <Link to="/" activeStyle={{color:'red'}}>首页</Link>

      或者指定className

      <Link to="/" activeClassName='acitve'>首页</Link>

    6.context

      

    class ParName extends Component{
        constructor(props, context) {
            super(props, context);
            this.context.router; // it works
        }
        // static contextTypes = { router: React.PropTypes.object }
        handleSubmit(event){
            event.preventDefault();
            const username = event.target.elements[0].value;
            const desc = event.target.elements[1].value;
            const path = `/p/${username}/${desc}`;
            this.context.router.push(path);
    
        }
        render(){
            return(
                <div>
                    <h2>Repos</h2>
                    <ul>
                      <li><NavLink to="/p/reactjs/react-router">React Router</NavLink></li>
                      <li><NavLink to="/p/facebook/react">React</NavLink></li>
                      <li>
                          <form onSubmit = {this.handleSubmit.bind(this)}>
                              <input type='text' placeholder='username'/> / {' '}
                              <input type='text' placeholder='desc'/>{' '}
                              <button type='submit'>go</button>
                          </form>
                      </li>
                    </ul>
                    {this.props.children}
              </div>
            )
        }
    }
    ParName.contextTypes = {
      router: React.PropTypes.object
    };

     - -一定要记住bind(this)

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  • 原文地址:https://www.cnblogs.com/huangmin1992/p/7542090.html
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