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源代码：
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<!doctype html> <html lang="en"> <head> <meta charset="utf-8"> <title>jQuery UI 拖动（Draggable） - 约束运动</title> <link rel="stylesheet" href="//apps.bdimg.com/libs/jqueryui/1.10.4/css/jquery-ui.min.css"> <script src="//apps.bdimg.com/libs/jquery/1.10.2/jquery.min.js"></script> <script src="//apps.bdimg.com/libs/jqueryui/1.10.4/jquery-ui.min.js"></script> <link rel="stylesheet" href="jqueryui/style.css"> <style> .draggable { width: 90px; height: 90px; padding: 0.5em; float: left; margin: 0 10px 10px 0; } #draggable, #draggable2 { margin-bottom:20px; } #draggable { cursor: n-resize; } #draggable2 { cursor: e-resize; } #containment-wrapper { width: 95%; height:150px; border:2px solid #ccc; padding: 10px; } h3 { clear: left; } </style> <script> $(function() { $( "#draggable" ).draggable({ axis: "y" }); $( "#draggable2" ).draggable({ axis: "x" }); $( "#draggable3" ).draggable({ containment: "#containment-wrapper", scroll: false }); $( "#draggable5" ).draggable({ containment: "parent" }); }); </script> </head> <body> <h3>沿着轴约束运动：</h3> <div id="draggable" class="draggable ui-widget-content"> <p>只能垂直拖拽</p> </div> <div id="draggable2" class="draggable ui-widget-content"> <p>只能水平拖拽</p> </div> <h3>或者在另一个 DOM 元素中约束运动：</h3> <div id="containment-wrapper"> <div id="draggable3" class="draggable ui-widget-content"> <p>我被约束在盒子里</p> </div> <div class="draggable ui-widget-content"> <p id="draggable5" class="ui-widget-header">我被约束在父元素内</p> </div> </div> </body> </html>
运行结果