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最新推荐文章于 2025-09-12 15:58:40 发布

转载最新推荐文章于 2025-09-12 15:58:40 发布 · 65 阅读

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原文链接：https://my.oschina.net/u/2421889/blog/485960

文章标签：

#python

2019独角兽企业重金招聘Python工程师标准>>>

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title></title>
    <style>
        #circle{position:relative;width: 600px; height: 600px;background: #ff0000;border-radius: 50%;margin:0 auto;}
        .c{position: absolute; width: 50%; height: 50%;background: #00ff00;border-radius: 50%;}
    </style>
</head>
<body>
<div id="circle">
    <!--<div></div>-->

    </div>
    <script>
     var circleObj=document.getElementById("circle");
     var cObj=circleObj.getElementsByTagName("div");
        circleObj.onmouseenter=function(){
            fenLie(this) };
     function fenLie(obj){
            var frag=document.createDocumentFragment();//创建碎片相当于一个空容器，将div打包入这个frag
            for(var i=0;i<4;i++){
            var div=document.createElement("div");
                if(i==0){
                    div.style.left="0px";
                    div.style.top="0px";
                }
                else if(i==1){
                    div.style.right="0px";
                    div.style.top="0px";
                                }
                else if(i==2){
                    div.style.left="0px";
                    div.style.bottom="0px";
                                }
                else if(i==3){
                    div.style.right="0px";
                    div.style.bottom="0px";
                                }//使用定位，兼容IE7
            div.className="c";
                div.style.background=color();
                div.onmouseenter=function(){
                fenLie(this);}

            frag.appendChild(div);//在最后插入div
            }
        obj.appendChild(frag);
        obj.style.background="none";
        obj.onmouseenter=null;
     }//解绑
     function color(){
         var arr=["0","1","2","3","4","5","6","7","8","9","a","b","c","d","e","f"];//颜色是十六进制
         var str="#";
         for(var i=0;i<6;i++){
             var r=Math.floor(Math.random()*16);//产生0-15之间的随机数；
             str+=arr[r];//随机选择在数组的第几位，并且拼接起来
         }
         return str;
     }
        // }
    </script>
</body>
</html>

转载于:https://my.oschina.net/u/2421889/blog/485960