非标
此特征是非标准的，且不在标准轨道中。不要在面向 Web 的生产站点中使用它：它不适用于每个用户。实现之间可能存在大的不兼容性，且行为将来可能改变。
弃用
This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the
兼容性表格
at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.
DataTransfer.mozClearDataAt()
method removes the data associated with the given format for an item at the specified index. The index must be in the range from zero to the number of items minus one.
若
format
argument is not provided, then the data associated with all formats is removed. If the format is not found, then this method has no effect. If the last format for the item is removed, the entire item is removed, reducing
mozItemCount
by one.
Removing the last format for a particular index removes that item entirely, shifting the remaining items down and changing their indices.
注意： This method is Gecko-specific.void dataTransfer.mozClearDataAt([type], index);
string
representing the type of the drag data to remove from the
drag data object
.
unsigned long
representing the index of the data to remove.
This example shows the use of the
mozClearDataAt()
method in a
dragend
event handler.
function dragend_handler(event)
{
var dt = event.dataTransfer;
// Remove a text/html item
dt.mozClearDataAt("text/html", 1);
}
This method is not defined in any Web standard.
| 桌面 | 移动 | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
mozClearDataAt
非标
|
Chrome No | Edge No | Firefox ? — 71 | IE No | Opera No | Safari No | WebView Android No | Chrome Android No | Firefox Android ? | Opera Android No | Safari iOS No | Samsung Internet Android No |
不支持
兼容性未知
实验。期望将来行为有所改变。
非标。预期跨浏览器支持较差。
DataTransfer
addElement()
clearData()
getData()
mozClearDataAt()
mozGetDataAt()
mozSetDataAt()
mozTypesAt()
setData()
setDragImage()