js小效果:上移和下移!

<!DOCTYPE html> <html>

<head>
    <meta charset="UTF-8">
    <title></title>
    <script src="http://wangshixiong.vip/zp/move.js"></script>
    <style type="text/css">
        body {
            background: #D9D1CB;
            margin: 0;
        }
        ul, li {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .box {
            width: 1200px;
            height: 800px;
            margin: 0 auto;
            position: relative;
            background: url(http://cdn.attach.qdfuns.com/notes/pics/201701/20/195424zwu5vxeuw1xlzl25.jpg) no-repeat;
        }
        .content {
            position: absolute;
            width: 400px;
            top: 200px;
            left: 50px;
        }
        li {
            height: 40px;
            padding: 0 10px 0 10px;
            margin-bottom: 6px;
            background: #745857;
            border-radius: 6px;
            line-height: 40px;
            position: relative;
        }
        .name {
            float: left;
            font-family: simhei;
            color: white;
            font-size: 18px;
        }
        .btn {
            float: right;
            display: inline-block;
        }
        .btn span {
            text-align: center;
            /*margin-top: 3px;*/
            vertical-align: middle;
            line-height: 30px;
            margin-right: 6px;
            display: inline-block;
            border-radius: 6px;
            background: #EFEEF4;
            width: 50px;
            height: 30px;
            cursor: pointer;
            border: 1px solid #1A222D;
        }
        .btn span:hover {
            background: mediumpurple;
            color: white;
        }
    </style>
</head>

<body>
    <div class="box">
        <ul class="content">
            <li>
                <span class="name">Happy New Year to yo</span>
                <div class="btn">
                    <span>上移</span>
                    <span>下移</span>
                </div>
            </li>
            <li>
                <span class="name">Happy birthday to you!</span>
                <div class="btn">
                    <span>上移</span>
                    <span>下移</span>
                </div>
            </li>
            <li>
                <span class="name">There was genuine joy</span>
                <div class="btn">
                    <span>上移</span>
                    <span>下移</span>
                </div>
            </li>
            <li>
                <span class="name">happy cheerful glad</span>
                <div class="btn">
                    <span>上移</span>
                    <span>下移</span>
                </div>
            </li>
            <li>
                <span class="name">a joyous family </span>
                <div class="btn">
                    <span>上移</span>
                    <span>下移</span>
                </div>
            </li>
            <li>
                <span class="name">She is a happy girl. </span>
                <div class="btn">
                    <span>上移</span>
                    <span>下移</span>
                </div>
            </li>
        </ul>
    </div>
</body>
<script type="text/javascript">
    var ul = document.getElementsByTagName('ul')[0];
    var lis = ul.children; //获取到所有的li
    var tips = document.getElementsByClassName('tips');

    for(var i = 0; i < lis.length; i++) {
        var preMove = lis[i].children[1].children[0]; //上移按钮
        var downMove = lis[i].children[1].children[1]; //下移按钮

        //点击上移
        preMove.onclick = function() {
            var thisLi = this.parentElement.parentElement; //当前点击的li
            var preLi = this.parentElement.parentElement.previousElementSibling; //当前点击的li的上一个

            if(!preLi) { //当没有上一个元素时 停止运行
                return;
            } else {
                move(thisLi, {top: -46}, 300, 'linear', end)
                move(preLi, {top: 46}, 300, 'linear', end)
            }

            //调换位置
            function end() {
                thisLi.style.top = 0;
                preLi.style.top = 0;
                ul.insertBefore(thisLi, preLi);
            }
        };

        //点击下移
        downMove.onclick = function() {
            var thisLi = this.parentElement.parentElement; //当前点击的li
            var nextLi = this.parentElement.parentElement.nextElementSibling; //当前点击的li的下一个

            if(!nextLi) { //当没有下一个元素时,停止
                console.log('没有下一个了');
                return;
            } else {
                move(thisLi, {top: 46}, 300, 'linear', end)
                move(nextLi, {top: -46}, 300, 'linear', end)
            }
            //调换位置
            function end() {
                thisLi.style.top = 0;
                nextLi.style.top = 0;
                ul.insertBefore(nextLi,thisLi );
            }
        };
    }
</script>

</html>

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