在event.dataTransfer.setData中的数据类型冲突在firefox和IE.'text / html'在IE中不支持。所以我假设使用'text'。问题是firefox不支持'text'。它单独支持'text / html'或'html'。解决此问题的解决方案是什么?
HTML:
<div class="box" draggable="true">
<img src="drag icon.png" width="16" height="16"/>
<header>B</header>
<p>
Put me
</p>
</div>
<div class="box" draggable="true">
<img src="drag icon.png" width="16" height="16"/>
<header>C</header>
<p>
right
</p>
</div>
<div class="box" draggable="true">
<img src="drag icon.png" width="16" height="16"/>
<header>D</header>
<p>
into
</p>
</div>
<div class="box" draggable="true">
<img src="drag icon.png" width="16" height="16"/>
<header>E</header>
<p>
the
</p>
</div>
脚本:
(function () {
var id_ = 'boxes-example';
var boxes_ = document.querySelectorAll('#' + id_ + ' .box');
var dragSrcEl_ = null;
this.handleDragStart = function (e) {
e.dataTransfer.effectAllowed = 'move';
e.dataTransfer.setData('text/html', this.innerHTML);
dragSrcEl_ = this;
this.style.opacity = '0.5';
// this/e.target is the source node.
this.addClassName('moving');
};
this.handleDragOver = function (e) {
if (e.preventDefault) {
e.preventDefault(); // Allows us to drop.
}
e.dataTransfer.dropEffect = 'move';
return false;
};
this.handleDragEnter = function (e) {
this.addClassName('over');
};
this.handleDragLeave = function (e) {
// this/e.target is previous target element.
this.removeClassName('over');
};
this.handleDrop = function (e) {
// this/e.target is current target element.
if (e.stopPropagation) {
e.stopPropagation(); // stops the browser from redirecting.
}
// Don't do anything if we're dropping on the same box we're dragging.
if (dragSrcEl_ != this) {
dragSrcEl_.innerHTML = this.innerHTML;
this.innerHTML = e.dataTransfer.getData('text/html');
}
return false;
};
this.handleDragEnd = function (e) {
// this/e.target is the source node.
this.style.opacity = '1';
[ ].forEach.call(boxes_, function (box) {
box.removeClassName('over');
box.removeClassName('moving');
});
};
[ ].forEach.call(boxes_, function (box) {
box.setAttribute('draggable', 'true'); // Enable boxes to be draggable.
box.addEventListener('dragstart', this.handleDragStart, false);
box.addEventListener('dragenter', this.handleDragEnter, false);
box.addEventListener('dragover', this.handleDragOver, false);
box.addEventListener('dragleave', this.handleDragLeave, false);
box.addEventListener('drop', this.handleDrop, false);
box.addEventListener('dragend', this.handleDragEnd, false);
});
})();
这是一个示例基本的html5拖放代码。您可以使用任何拖放代码并检查此问题
答案 0 :(得分:0)
尝试...
this.innerHTML = e.dataTransfer.getData('text') || e.dataTransfer.getData('text/html');
...或
try {
this.innerHTML = e.dataTransfer.getData('text');
} catch (e) {
this.innerHTML = e.dataTransfer.getData('text/html');
}
如果e.dataTransfer.getData
抛出异常......
答案 1 :(得分:0)
您可以使用'text'
,Firefox会将其转换为'text/plain'
。之后缺少的是阻止drop
事件的默认值。这似乎有效:
e.dataTransfer.setData('text', this.innerHTML);
this.handleDrop = function (e) {
// this/e.target is current target element.
if (e.preventDefault) {
e.preventDefault(); // Allows us to drop.
}
// Don't do anything if we're dropping on the same box we're dragging.
if (dragSrcEl_ != this) {
dragSrcEl_.innerHTML = this.innerHTML;
this.innerHTML = e.dataTransfer.getData('text');
}
return false;
};