1 // 02-列表渲染 2 3 import React from 'react' 4 import ReactDOM from 'react-dom' 5 //注意事项 6 // 1:react 使用数组map()方法遍历 7 // 2:渲染列表时需要添加key属性,key属性值需要唯一性 8 9 const arr = [ 10 {id:1,name:'张三'}, 11 {id:2,name:'李三'}, 12 {id:3,name:'吴三'}, 13 ] 14 const list = ( 15 <ul> 16 {arr.map(item=><li key={item.id}>{item.name}</li>)} 17 </ul> 18 ) 19 20 ReactDOM.render(list,document.getElementById('root'))