【发布时间】：2022-01-28 10:16:10
【问题描述】：
我有一个带有行的表格，每行都有一个拖动按钮，您可以单击并按住该按钮以使该行可拖动到表格中的另一个位置。这在 Chrome 中运行良好，但在 IE11 中运行良好。我通过使行默认可拖动来进行实验，我发现如果我直接与它交互，我只能拖动行元素。如果我从按钮元素单击并拖动，则不会拖动该行。如何在IE11中通过拖动子元素使父元素可拖动？
<!DOCTYPE HTML>
<html>
<head>
<style>
.droptarget {
float: left;
width: 100px;
height: 35px;
margin: 15px;
padding: 10px;
border: 1px solid #aaaaaa;
}
</style>
</head>
<body>
<p>Drag the p element back and forth between the two rectangles:</p>
<div class="droptarget">
<div draggable="true" id="dragtarget">Drag me!
<button>button</button>
</div>
</div>
<div class="droptarget"></div>
<p style="clear:both;"><strong>Note:</strong> drag events are not supported in Internet Explorer 8 and earlier versions or Safari 5.1 and earlier versions.</p>
<p id="demo"></p>
<script>
/* Events fired on the drag target */
document.addEventListener("dragstart", function(event) {
// The dataTransfer.setData() method sets the data type and the value of the dragged data
event.dataTransfer.setData("Text", event.target.id);
// Output some text when starting to drag the p element
document.getElementById("demo").innerHTML = "Started to drag the p element.";
// Change the opacity of the draggable element
event.target.style.opacity = "0.4";
});
// While dragging the p element, change the color of the output text
document.addEventListener("drag", function(event) {
document.getElementById("demo").style.color = "red";
});
// Output some text when finished dragging the p element and reset the opacity
document.addEventListener("dragend", function(event) {
document.getElementById("demo").innerHTML = "Finished dragging the p element.";
event.target.style.opacity = "1";
});
/* Events fired on the drop target */
// When the draggable p element enters the droptarget, change the DIVS's border style
document.addEventListener("dragenter", function(event) {
if ( event.target.className == "droptarget" ) {
event.target.style.border = "3px dotted red";
}
});
// By default, data/elements cannot be dropped in other elements. To allow a drop, we must prevent the default handling of the element
document.addEventListener("dragover", function(event) {
event.preventDefault();
});
// When the draggable p element leaves the droptarget, reset the DIVS's border style
document.addEventListener("dragleave", function(event) {
if ( event.target.className == "droptarget" ) {
event.target.style.border = "";
}
});
/* On drop - Prevent the browser default handling of the data (default is open as link on drop)
Reset the color of the output text and DIV's border color
Get the dragged data with the dataTransfer.getData() method
The dragged data is the id of the dragged element ("drag1")
Append the dragged element into the drop element
*/
document.addEventListener("drop", function(event) {
event.preventDefault();
if ( event.target.className == "droptarget" ) {
document.getElementById("demo").style.color = "";
event.target.style.border = "";
var data = event.dataTransfer.getData("Text");
event.target.appendChild(document.getElementById(data));
}
});
</script>
</body>
</html>编辑：我发现我无法通过 IE11 中的按钮元素拖动父级。我通过不使用按钮解决了这个问题，而是使用了 div。
【问题讨论】：
标签： javascript html drag-and-drop frontend internet-explorer-11