运行时,按F5便可看效果!
<script> s=new Array(3) s[0]=Math.floor(Math.random()*256)+"" s[1]=Math.floor(Math.random()*256)+"" s[2]=Math.floor(Math.random()*256)+"" a=s[0]+s[1]+s[2] document.write("<body bgcolor="+a+">") document.write("</body>") </script>
<script> s="icon/icon"+Math.floor(Math.random()*18)+".gif" document.write("<body background="+s+">") document.write("</body>") </script>
红绿蓝三种颜色:
<script> s=new Array(3) s[0]="ff0000" s[1]="00ff00" s[2]="0000ff" i=Math.floor(Math.random()*3) document.write("<body bgcolor="+s[i]+">") document.write("</body>") </script>
按钮上:
<script> s=new Array(3) s[0]="ff0000" s[1]="00ff00" s[2]="0000ff" i=Math.floor(Math.random()*3) document.write("<input type='button' value='按钮' style=background-color:"+s[i]+">") </script>
随机显示图片: 将以下代码加在<head>与</head>之间。
<script LANGUAGE="JavaScript"> bg = new Array(3); //设定图片数量2 bg[1] = 'icon/1.gif' //显示的图片路径 bg[2] = 'icon/2.gif' bg[3] = 'icon/3.gif' index = Math.floor(Math.random()*bg.length); document.write("<BODY BACKGROUND="+bg[index]+">"); </script> -
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