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  • HTML5商城开发二 通过位移实现拖动效果

    1.效果

    在该区域内,手按住拖动,该模块可上下滑动,至最顶或最底部,滑动出现空白区域将自动缩回

    2.代码

    <!DOCTYPE html>
    <html>
    <head>
        <title>首页</title>
        <style type="text/css">   
            .area-item {
                height: 100px;
                line-height:100px;
                border-bottom: 1px solid #333;
                 font-size: 50px;
            }
        </style>
        <script type="text/javascript" src="js/jquery.js"></script>
        <script type="text/javascript" src='js/jquery.mobile.custom.js'></script>
        <script type="text/javascript">
            $(function () {
               $("#AreaList").height(2121);
                $("#AreaScroll").height(1000);
    
                //位置偏移量=真实高度-显示高度
                var endPos = $("#AreaList").height() - $("#AreaScroll").height();
    
                if (endPos > 0) {
                    var startY = 0;
                    var pos = 0;//真实位置
                    $("#AreaScroll").on("vmousemove", function (event) {
                        $("#AreaList").css("transform", "translateY(" + (event.clientY - startY - pos) + "px)");
                    });
    
                    $("#AreaScroll").on("vmousedown", function (event) {
                        startY = event.clientY;
                    });
                    $("#AreaScroll").on("vmouseup", function (event) {
                        //判断正反方向并求位移
                        var posi = -pos + event.clientY - startY;
    
                        if (posi > 0) {
                            pos = 0;
                            $("#AreaList").css("transform", "translateY(0px)");
                        }
                        if (posi < 0 && posi >= -endPos) {
                            pos = -posi;
                            $("#AreaList").css("transform", "translateY(" + posi + "px)");
                        }
                        if (posi < -endPos) {
                            pos = endPos;
                            $("#AreaList").css("transform", "translateY(" + (-endPos) + "px)");
                        }
                    });
                }
            });
        </script>
    </head>
    <body>
    
        <div id="AreaScroll" style="overflow: hidden;">
            <div id="AreaList" style="transform: translateY(0px);">
                <div class="area-item">0级台风</div>
                <div class="area-item">一级台风</div>
                <div class="area-item">一级台风</div>
                <div class="area-item">一级台风</div>
                <div class="area-item">一级台风</div>
                <div class="area-item">11级台风</div>
                <div class="area-item">一级台风</div>
                <div class="area-item">一级台风</div>
                <div class="area-item">一级台风</div>
                <div class="area-item">一级台风</div>
                <div class="area-item">12级台风</div>
                <div class="area-item">一级台风</div>
                <div class="area-item">一级台风</div>
                <div class="area-item">一级台风</div>
                <div class="area-item">一级台风</div>
                <div class="area-item">13级台风</div>
                <div class="area-item">一级台风</div>
                <div class="area-item">一级台风</div>
                <div class="area-item">一级台风</div>
                <div class="area-item">一级台风</div>  
                <div class="area-item">2级台风</div>
            </div>
        </div>
    
    </body>
    </html>
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  • 原文地址:https://www.cnblogs.com/xcsn/p/4937966.html
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