该ondrop 属性时触发拖动的元素在HTML被丢弃。
您可以尝试运行以下代码来实现ondrop 属性-
<!DOCTYPE HTML>
<html>
<head>
<style>
.drag {
float : left;
width : 100px;
height : 35px;
border : 2px dashed #876587;
margin : 15px;
padding: 10px;
}
</style>
</head>
<body>
<div class = "drag" ondrop = "drop(event)" ondragover = "dropNow(event)">
<p ondragstart = "dragStart(event)" ondrag = "draggingNow(event)" draggable = "true" id="dragtarget">Drag!</p>
</div>
<div class = "drag" ondrop = "drop(event)" ondragover = "dropNow(event)"></div>
<div id="box"></div>
<p>Drag the left box to the right or drag the right box to the left.</p>
<script>
function dragStart(event) {
event.dataTransfer.setData("Text", event.target.id);
}
function draggingNow(event) {
document.getElementById("box").innerHTML = "拖成功！";
}
function dropNow(event) {
event.preventDefault();
}
function drop(event) {
event.preventDefault();
var data = event.dataTransfer.getData("Text");
event.target.appendChild(document.getElementById(data));
document.getElementById("box").innerHTML = "元素成功删除！";
}
</script>
</body>
</html>