js随机变换背景

2024-03-26 15:48:40

<!DOCTYPE html>
<html>
   <head>
       <meta charset="utf-8">
       <title>随机变化背景</title>
       <style type="text/css">
           #bg{
               width: 1000px;
               height: 500px;
           }
       </style>
   </head>
   <body>
       <div id="bg"></div>
   </body>
   <script>
       function changeBg(){
var bg=document.getElementById("bg");
var rand=Math.round(Math.random()*1000000);
bg.style.backgroundColor="#"+rand;
}
setInterval("changeBg();",1000);
   </script>
</html>

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