一句話： 是否通過數據控制視圖，例如綁定value的 。
受控組件:
class TestComponent extends React.Component {
constructor (props) {
super(props);
this.state = { username: 'lindaidai' };
}
render () {
return <input name="username" value={this.state.username} />
}
}
非受控組件：
import React, { Component } from 'react';
export class UnControll extends Component {
constructor (props) {
super(props);
this.inputRef = React.createRef();
}
handleSubmit = (e) => {
console.log('我們可以獲得input內的值為', this.inputRef.current.value);
e.preventDefault();
}
render () {
return (
<form onSubmit={e => this.handleSubmit(e)}>
<input defaultValue="lindaidai" ref={this.inputRef} />
<input type="submit" value="提交" />
</form>
)
}
}
