import React, { Component } from 'react' // import NavBar from './NavBar' import NavBar2 from './NavBar-2' export default class App extends Component {     render() {          return (             <div>                {/* <NavBar>                      <span>AAA</span>                     <strong>bbb</strong>                        <a href="https://www.baidu.com/">ccc</a>                </NavBar>  */}
              <NavBar2 leftSlot={ <span>AAA</span> }                        centerSlot={ <strong>bbb</strong> }                        rightSlot={ <a href="https://www.baidu.com/">ccc</a> }                 />              </div>         )     } } ---------------- body{     padding: 0;     margin: 0; } .nav-bar{     display: flex; }
.nav-item {     height: 44px;     line-height: 44px;     text-align: center; } .nav-left, .nav-right {      width: 70px;     skyblue; }
.nav-center{      flex: 1;       orangered; } ---------1----------     import React, { Component } from 'react' import './style.css' export default class NavBar extends Component {     render() {         console.log(this.props.children);         return (             <div className="nav-bar">                 <div className="nav-item  nav-left">  {this.props.children[0]}   </div>                 <div className="nav-item  nav-center">  {this.props.children[1]} </div>                 <div className="nav-item  nav-right">  {this.props.children[2]} </div>             </div>         )     } }     -----------2 具名插槽-----------      import React, { Component } from 'react' import './style.css' export default class NavBar extends Component {     render() {         // console.log(this.props);          const {leftSlot,centerSlot,rightSlot} = this.props;         return (             <div className="nav-bar">                 <div className="nav-item  nav-left">  {leftSlot} </div>                 <div className="nav-item  nav-center"> {centerSlot}  </div>                 <div className="nav-item  nav-right"> {rightSlot}   </div>             </div>         )     } }