DataTransferItem: Methode getAsFile()
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
Wenn das Element eine Datei ist, gibt die Methode DataTransferItem.getAsFile()
das File
-Objekt des Drag-Datenpunktes zurück. Wenn das Element keine Datei ist, gibt diese Methode null
zurück.
Syntax
js
getAsFile()
Parameter
Keine.
Rückgabewert
Beispiele
Dieses Beispiel zeigt die Verwendung der getAsFile()
-Methode in einem drop
Ereignishandler.
js
function dropHandler(ev) {
console.log("Drop");
ev.preventDefault();
const data = ev.dataTransfer.items;
for (let 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((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
const f = data[i].getAsFile();
console.log("… Drop: File");
}
}
}
Spezifikationen
Specification |
---|
HTML # dom-datatransferitem-getasfile-dev |
Browser-Kompatibilität
Report problems with this compatibility data on GitHubdesktop | mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
getAsFile |
Legend
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- Full support
- Full support
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.