jq 手风琴案例

<style>
        *{
            margin: 0;
            padding: 0;
            list-style:none;
        }
        div{
             1200px;
            height: 400px;
            border:2px solid #000;
            margin: 100px auto;
        }
        li{
             240px;
            height: 400px;
            float: left;
        }
        /*有图片*/
        li:nth-child(1){
            background-image: url("imgs/1.jpg");
        }
        li:nth-child(2){
            background-image: url("imgs/2.jpg");
        }
        li:nth-child(3){
            background-image: url("imgs/3.jpg");
        }
        li:nth-child(4){
            background-image: url("imgs/4.jpg");
        }
        li:nth-child(5){
            background-image: url("imgs/5.jpg");
        }

    </style>
</head>
<body>
<div>
    <ul>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
        <li></li>
    </ul>
</div>
<script src="jquery-1.12.4.js"></script>
<script>
    $.fn.accordion = function (colors, width) {
        colors = colors || [];
        width = width || 0;

        var $li = this.find("li");

        var boxLength = this.width();
        var maxLength = boxLength - ($li.length - 1) * width;
        var avgLength = boxLength / $li.length;

        //更改li的颜色
        $li.each(function (i, e) {
            $(e).css("backgroundColor", colors[i]);
        });

        //给li注册鼠标经过事件
        $li.on("mouseenter", function () {
            $(this).stop().animate({ maxLength}).siblings().stop().animate({ width})
        });

        $li.on("mouseleave", function () {
            $li.stop().animate({ avgLength});
        });
    };
</script>

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原文地址：https://www.cnblogs.com/lujieting/p/10110843.html