<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>state</title>
<script src="https://cdn.bootcss.com/react/15.4.2/react.min.js"></script>
<script src="https://cdn.bootcss.com/react/15.4.2/react-dom.min.js"></script>
<script src="https://cdn.bootcss.com/babel-standalone/6.22.1/babel.min.js"></script>
</head>
<body>
<div id="app"></div>
<script type="text/babel">
var NameButton=React.createClass({
getInitialState:function(){
return{
isVisable:false,
count:0
}
},
handleClick:function(e){
console.log(e) 这里的event是被react封装好的，里面的很多值在你不使用的时侯表面显示是null 真正获取的时候就有值 比如e.target就会显示当前这个元素
console.log(e.nativeEvent) 如果想使用原始的event 就用e.nativeEvent
this.setState({
count:this.state.count+1
})
},
render:function(){
var styleObj={
opacity:this.state.count>5 ? '0.2':'1',
}
return(
<div>
<h3>点击下面按钮</h3>
<button style={styleObj} onClick={this.handleClick}>点击了{this.state.count}次</button>
</div>
)
}
}
);
ReactDOM.render(
<NameButton/>,
document.getElementById("app")
)
</script>
</body>
</html>