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我有以下:上改变方法与输入子阵营控制父状态
import React from 'react';
import {render} from 'react-dom';
class TShirt extends React.Component {
render() {
return <div className="tshirt">{this.props.name}</div>;
}
}
class FirstName extends React.Component {
constructor(props) {
super(props);
this.state = {
submitted: false
};
}
getName() {
var name = this.refs.firstName.value;
this.setState({ submitted: true }, function() {
this.props.action(name);
});
}
render() {
return (
<div>
<h2>tell us your first name</h2>
<form>
<input
type="text"
ref="firstName"
onChange={this.getName.bind(this)}
/>
<div className="buttons-wrapper">
<a href="#">back</a>
<button>continue</button>
</div>
</form>
</div>
);
}
}
class Nav extends React.Component {
render() {
return <p>navigation</p>;
}
}
class App extends React.Component {
constructor(props) {
super(props);
this.state = {
name: ''
};
}
getName (tshirt) {
this.setState({ name:tshirt })
}
render() {
return (
<section>
<Nav />
<TShirt name={this.state.name} />
<FirstName action={this.getName} />
</section>
);
}
}
render(<App/>, document.getElementById('app'));
我特林更新与所述值从所述的onChange方法来(使用的道具)从“T恤”组件“名字“组件。
我有一个整体的状态包装内部控制一切,但是当我开始insdie输入我得到这个错误键入名称:
遗漏的类型错误:this.setState不是一个函数
指于:
getName (tshirt) {
this.setState({ name:tshirt })
}
的[onclick事件中React.js绑定]可能的复制(http://stackoverflow.com/questions/ 27397266/onclick-event-binding-in-react-js) –