两个盒子减速运动

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最新推荐文章于 2025-04-05 11:17:40 发布

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分类专栏： js

本文链接：https://blog.youkuaiyun.com/datuzidppd5556/article/details/100057082

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两个盒子减速运动

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        #box {
            width: 100px;
            height: 100px;
            background-color: aquamarine;
            position: absolute;
            top: 0px;
            left: 0px;
        }
        .bs {
            width:100px;
            height:100px;
            background-color: yellowgreen;
            position: absolute;
            top:400px;
            left: 700px;
        }
    </style>
</head>

<body>
    <div id="box"></div>
    <div class="bs" id="bs"></div>

    <script>

        var box = document.getElementById("box");
        var bs = document.getElementById("bs");


        jiansu(box, "left",600);
        jiansu(bs, "left",0);


        function jiansu(obj, attr, target) {
            function getStyle(obj, attr) {
                return obj.currentStyle ? obj.currentStyle[attr] : getComputedStyle(obj)[attr];
            }
            obj.onclick = function () {
                var timer;
                clearInterval(timer);
                timer = setInterval(function () {
                    // 获取的left值带有px单位。
                    var boxLeft = parseInt(getStyle(obj, attr));
                    console.log(boxLeft)
                    // 取上限，最大值（目标值）才会是target:600px;
                    var step = Math.ceil((target - boxLeft) / 10);
                    var step = step > 0 ? Math.ceil((target - boxLeft) / 10) : Math.floor((target - boxLeft) / 10)
                    obj.style[attr] = boxLeft + step + "px";
                }, 100)
            }
        }
    </script>
</body>

</html>

完整版代码，粘贴可以直接使用。