jqury-ui 拖拽

http://www.runoob.com/jqueryui/example-draggable.html

依赖:

<link rel="stylesheet" href="${pageContext.request.contextPath}/resources/plugins/jquery-ui-1.11.2/jquery-ui.min.css">
<script type="text/javascript" src="${pageContext.request.contextPath}/resources/plugins/jquery-ui-1.11.2/jquery-ui.min.js"></script>

在固定区域内拖拽：

  $( "#draggable" ).draggable(
        { containment: ".video-box" }
    );

.video-box 指可拖拽的范围