錯誤: 未捕獲的類型錯誤:(:75:17)在babaClick無法讀取空 的屬性「道具」 在ES5如果i型它也不會是錯了,但如果我在ES6就像下面的代碼鍵入這是錯的。我只是不知道爲什麼...類型錯誤:無法讀取屬性「道具」空的反應
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>HelloMessage</title>
<script src="lib/react.js"></script>
<script src="lib/react-dom.js"></script>
<script src="lib/babel.min.js"></script>
<script type="text/babel">
class HelloMesssage extends React.Component{
constructor(props){
super(props)
this.state={
zan:0
}
}
addZan(){
this.setState(
{
zan:this.state.zan+1
}
)
}
render(){
return(
<div>
<p>姓名:{this.props.name}</p>
<p>贊:<Zan zan={this.state.zan}/></p>
<p><Btn babaZan={this.addZan.bind(this)}/></p>
</div>
)
}
}
class Btn extends React.Component{
babaClick(){
this.props.babaZan();
}
render(){
return(
<button onClick={this.babaClick}>贊</button>
)
}
}
class Zan extends React.Component{
render(){
return(
<span>{this.props.zan}</span>
)
}
}
ReactDOM.render(
<HelloMesssage name="xxxindy"/>,
document.getElementById('container')
);
</script>
<div id="container"></div>
感謝üSOOOO多!有用!!!!我的眼睛充滿了淚水! – xxxindy