react表單的一些小例子
阿新 • • 發佈：2018-12-16
<!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="../node_modules/react/umd/react.development.js"></script>
<script src="../node_modules/react-dom/umd/react-dom.development.js"></script>
<script src="../node_modules/babel-standalone/babel.min.js"></script>
</head>
<body>
<div id="my"></div>
<script type="text/babel">
class FormGroup extends React.Component{
constructor(props){
super(props)
this.state = {
name:'',
psd:'',
sex:'man',
city:'2',
}
}
handleChange(e){
let name = e.target.name;
this.setState({
[name]:e.target.value
})
};
submit(){
let data={
userName:this.state.name,
userPassWord:this.state.psd,
userSex:this.state.sex,
userCity:this.state.city
}
alert(JSON.stringify(data))
}
render(){
let cityArr=[
{name:'北京'},
{name:'上海'},
{name:'廣州'},
]
return(
<div>
<label>姓名：</label>
<input name="name" type="text" value={this.state.name} onChange={(e)=>this.handleChange(e)}/>
{this.state.name}
<label>密碼：</label>
<input name="psd" type="password" value={this.state.psd} onChange={(e)=>this.handleChange(e)}/>
{this.state.psd}
<input type="radio" name="sex" checked={this.state.sex=='man' ? true :false} value="man" onChange={(e)=>this.handleChange(e)}/>男
<input type="radio" name="sex" checked={this.state.sex=='woman' ? true :false} value="woman" onChange={(e)=>this.handleChange(e)}/>女
<label>城市：</label>
<select name="city" value={this.state.city} onChange={(e)=>this.handleChange(e)}>
{
cityArr.map((val,index)=>{
return <option key={index} value={index+1}>{val.name}</option>
})
}
</select>
<button onClick={()=>this.submit()}>提交</button>
</div>
)
}
}
ReactDOM.render(
<div>
<FormGroup/>
</div>,
document.getElementById('my')
)
</script>
</body>
</html>
