<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<script src="./build/react-0.14.0.js"></script>
<script src="./build/react-dom.js"></script>
<script src="./build/browser.min.js"></script>
</head>
<body>
<div id="app"></div>
<script type="text/babel">
class Todolist extends React.Component{
constructor(props){
super(props)
this.state={
todolists:[
{text:'早上九点上班'},
{text:'下午两点上班'},
{text:'晚上七点下班'}
]
}
this.addTodo=this.addTodo.bind(this)
this.deleteTodo=this.deleteTodo.bind(this)
}
addTodo(e){
if(e.keyCode==13){
console.log(e.target.value)
if(e.target.value!=''){
var todo = {text:e.target.value}
this.state.todolists.push(todo)
this.setState({
todolists:this.state.todolists
})
e.target.value=''
}
}
}
deleteTodo(e){
var index= e.target.className
console.log(index)
this.state.todolists.splice(index,1)
this.setState({
todolists:this.state.todolists
})
e.target.className=''
}
render(){
return(
<div>
<input type="text" placeholder="请输入您的计划" onKeyUp={this.addTodo} />
<ol>
{
this.state.todolists.map((item,index)=>{
return (<li key={index}>{item.text}<span style={{color:'red',marginLeft:'15px'}} className={index} onClick={this.deleteTodo}>删除</span></li>)
})
}
</ol>
</div>
)
}
}
var app = document.getElementById('app')
ReactDOM.render(
<Todolist/>,
app
)
</script>
</body>
</html>
效果如图
