js light switch small application

一个新手

Release： 2017-09-08 11:20:35

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The application of judgment in js [switch light]

<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8">
        <title>开关灯</title>
        <style type="text/css">
            html, body {            
            margin: 0px;            
            padding: 0px;            
            width: 100%;            
            height: 100%;            
            cursor: pointer;            
            background-color: white;        }
        </style>
    </head>                
      <body id="bodyEle">
        <script type="text/javascript">
        var oBody = document.getElementById("bodyEle");
        oBody.onclick = function () {
            var bg = this.style.backgroundColor;        
            switch (bg) {            
            case "white":                
            this.style.backgroundColor = "red";                
            break;            
            case "red":                
            this.style.backgroundColor = "black";                
            break;            
            default:                
            this.style.backgroundColor = "white";
            }
        }
       </script>
     </body>
</html>

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