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.mozSetDataAt()
method is used to add data to a specific index in the drag event's
data transfer
对象。
A data transfer may store multiple items, each at a given zero-based index.
mozSetDataAt()
may only be called with an index argument less than
mozItemCount
in which case an existing item is modified, or equal to
mozItemCount
in which case a new item is added, and the
mozItemCount
is incremented by one.
Data should be added in order of preference, with the most specific format added first and the least specific format added last. If data of the given format already exists, it is replaced in the same position as the old data.
The data should be either a
string
，
布尔
or number type (which will be converted into a string) or an
nsISupports
.
void dataTransfer.mozSetDataAt([type], data, index);
string
representing the type of the drag data to add to the
drag data object
.
nsIVariant
representing the data to add to the
drag data object
.
unsigned long
representing the index of the data to add.
This example shows the use of the
mozSetDataAt()
method in a
dragstart
handler.
function dragstart_handler(event)
{
var dt = event.dataTransfer;
var idx = dt.mozItemCount;
// Add two new items to the drag transfer
if (idx >= 0) {
dt.mozSetDataAt("text/uri-list","http://www.example.com/", idx);
dt.mozSetDataAt("text/html", "Hello World", idx+1);
}
}
This method is not defined in any Web standard.
| 桌面 | 移动 | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
mozSetDataAt
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