React事件属性

一、简介

二、滚动例子，滚动改变颜色

 1 <!DOCTYPE html>
 2 <html lang="zh-cn">
 3 <head>
 4     <meta charset="UTF-8">
 5     <title>React涓殑浜嬩欢</title>
 6 </head>
 7 <body>
 8     <script src="./react-0.13.2/react-0.13.2/build/react.js"></script>
 9     <script src="./react-0.13.2/react-0.13.2/build/JSXTransformer.js"></script>
10     <script type="text/jsx">
11         var HelloWorld = React.createClass({
12             getInitialState: function () {
13                 return {
14                     backgroundColor: '#FFFFFF'
15                 }
16             },
17             handleWheel: function (event) {
18                 var newColor = (parseInt(this.state.backgroundColor.substr(1), 16) + event.deltaY * 997).toString(16);
19                 newColor = '#' + newColor.substr(newColor.length - 6).toUpperCase();
20                 this.setState({
21                     backgroundColor: newColor
22                 })
23             },
24             render: function () {
25                 console.log(this.state)
26                 return <div onWheel={this.handleWheel} style={this.state}>
27                 <p>Hello, World</p>
28                 </div>;
29             },
30         });
31         React.render(<HelloWorld></HelloWorld>, document.body);
32     </script>
33 </body>
34 </html>

三、鼠标事件，输对密码才显示内容

 1 <!DOCTYPE html>
 2 <html lang="zh-cn">
 3 <head>
 4     <meta charset="UTF-8">
 5     <title>React涓殑浜嬩欢</title>
 6 </head>
 7 <body>
 8     <script src="./react-0.13.2/react-0.13.2/build/react.js"></script>
 9     <script src="./react-0.13.2/react-0.13.2/build/JSXTransformer.js"></script>
10     <script type="text/jsx">
11         var HelloWorld = React.createClass({
12             getInitialState: function () {
13                 return {
14                     password: ''
15                 }
16             },
17             handleKeyPress: function (event) {
18                 this.setState({
19                     password: this.state.password + event.which
20                 });
21                 console.log(this.state)
22             },
23             handleChange: function (event) {
24                 event.target.value = '';
25             },
26             render: function () {
27                 return <div>
28                 <input onKeyPress={this.handleKeyPress} onChange={this.handleChange}></input>
29                 <p style={{
30                     'display': this.state.password.indexOf('495051') >= 0 ? 'inline' : 'none'
31                     }}>You got it!</p>
32                 </div>;
33             },
34         });
35         React.render(<HelloWorld></HelloWorld>, document.body);
36     </script>
37 </body>
38 </html>

四、鼠标事件2，记录鼠标的位置

 1 <!DOCTYPE html>
 2 <html lang="zh-cn">
 3 <head>
 4     <meta charset="UTF-8">
 5     <title>React涓殑浜嬩欢</title>
 6 </head>
 7 <body>
 8     <script src="./react-0.13.2/react-0.13.2/build/react.js"></script>
 9     <script src="./react-0.13.2/react-0.13.2/build/JSXTransformer.js"></script>
10     <script type="text/jsx">
11         var HelloWorld = React.createClass({
12             getInitialState: function () {
13                 return {
14                     x: 0,
15                     y: 0
16                 }
17             },
18             handleMouseMove: function (event) {
19                 this.setState({
20                     x: event.clientX,
21                     y: event.clientY
22                 });
23             },
24             render: function () {
25                 return <div onMouseMove={this.handleMouseMove} style={{
26                     height: '1000px',
27                     width: '700px',
28                     backgroundColor: 'gray'
29                 }}>
30                 {this.state.x + ', ' + this.state.y}
31                 </div>;
32             },
33         });
34         React.render(<HelloWorld></HelloWorld>, document.body);
35     </script>
36 </body>
37 </html>

 

posted @ 2015-12-17 23:32  shamgod  阅读(770)  评论(0)  编辑  收藏  举报
haha