原生js仿360开机启动右下角关闭浮动层效果源码下载

原生js仿360开机启动右下角关闭浮动层效果源码下载，喜欢的同学拿走。

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<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
    <style>
        .box {
            width: 322px;
            position: fixed;
            bottom: 0;
            right: 0;
            overflow: hidden;
        }

        #closeButton {
            position: absolute;
            top: 0;
            right: 0;
            width: 24px;
            height: 20px;
			line-height:20px;
			overflow:hidden;
            cursor: pointer;
			display:block;
			color:#fff;
        }
    </style>
</head>
<body>
<div class="box" id="box">
    <span id="closeButton">X</span>

    <div class="hd" id="headPart">
        <img src="images/t.jpg" alt=""/>
    </div>
    <div class="bd" id="bottomPart">
        <img src="images/b.jpg" alt=""/>
    </div>
</div>
<script>
    var closeButton = document.getElementById("closeButton");
    var bottomPart = document.getElementById("bottomPart");
    closeButton.onclick = function () {
        animate(bottomPart, {"height": 0}, function () {
            animate(bottomPart.parentNode, {"width": 0});
        });
    }


    function animate(obj, json, fn) {
        clearInterval(obj.timer);
        obj.timer = setInterval(function () {
            //如果本次执行完成后 所有的属性都达到了目标值 就可以清理了
            var flag = true;//假设所有的属性都达到了目标值
            for (var k in json) {
                var leader = parseInt(getStyle(obj, k)) || 0;
                var target = json[k];
                var step = (target - leader) / 10;
                step = step > 0 ? Math.ceil(step) : Math.floor(step);
                leader = leader + step;
                obj.style[k] = leader + "px";
                if (leader != target) {
                    flag = false;//告诉标记我还没达到
                }
            }
            //到了这里还是true就说明 没有任何人告诉falg自己是false
            //也就是说都达到了
            if (flag) {
                clearInterval(obj.timer);
                if (fn) {
                    fn();//有回调函数才调用
                }
            }
        }, 15);
    }


    function getStyle(obj, attr) {
        if (obj.currentStyle) {
            return obj.currentStyle[attr];
        } else {
            return window.getComputedStyle(obj, null)[attr];
        }
    }
</script>
</body>
</html>