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<!DOCTYPE HTML> <html> <head> <style> #div1, #div2 { float: left; width: 100px; height: 35px; margin: 10px; padding: 10px; border: 1px solid black; } </style> <script> function allowDrop(ev) { ev.preventDefault(); } function drag(ev) { ev.dataTransfer.setData("text", ev.target.id); } function drop(ev) { ev.preventDefault(); var data = ev.dataTransfer.getData("text"); ev.target.appendChild(document.getElementById(data)); } </script> </head> <body> <h2>拖放</h2> <p>在两个 div 元素之间来回拖动图像。</p> <div id="div1" ondrop="drop(event)" ondragover="allowDrop(event)"> <img src="img_w3slogo.gif" draggable="true" ondragstart="drag(event)" id="drag1" width="88" height="31"> </div> <div id="div2" ondrop="drop(event)" ondragover="allowDrop(event)"></div> </body> </html>