DataTransferItem.getAsString()
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since 2016年11月.
DataTransferItem.getAsString() 当 DataTransferItem 对象的 kind 属性是一个普通 Unicode 字符串时，该方法会用 DataTransferItem 对象的 kind 属性作为入参来执行传入的回调函数 (i.e. kind is string).
示例
dataTransferItem.getAsString(callback);
Parameters
callback-
A callback function that has access to the
data transfer item'sstring data. See Callback below for details.
Return value
undefined
Callback
The callback parameter is a callback function which accepts one parameter:
DOMString-
The drag data item's string data.
The callback return value is undefined.
Example
This example shows the use of the getAsString() method as an inline function in a drop event handler.
js
function drop_handler(ev) {
console.log("Drop");
ev.preventDefault();
var data = ev.dataTransfer.items;
for (var i = 0; i < data.length; i += 1) {
if (data[i].kind == "string" && data[i].type.match("^text/plain")) {
// This item is the target node
data[i].getAsString(function (s) {
ev.target.appendChild(document.getElementById(s));
});
} else if (data[i].kind == "string" && data[i].type.match("^text/html")) {
// Drag data item is HTML
console.log("... Drop: HTML");
} else if (
data[i].kind == "string" &&
data[i].type.match("^text/uri-list")
) {
// Drag data item is URI
console.log("... Drop: URI");
} else if (data[i].kind == "file" && data[i].type.match("^image/")) {
// Drag data item is an image file
var f = data[i].getAsFile();
console.log("... Drop: File ");
}
}
}
Specifications
| Specification |
|---|
| HTML # dom-datatransferitem-getasstring-dev |
Browser compatibility
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