DataTransferItem: getAsFile() method

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since November 2016.

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If the item is a file, the DataTransferItem.getAsFile() method returns the drag data item's File object. If the item is not a file, this method returns null.

Syntax

getAsFile()

Parameters

None.

Return value

If the drag data item is a file, a File object is returned; otherwise null is returned.

Examples

This example shows the use of the getAsFile() method in a drop event handler.

function dropHandler(ev) {
 console.log("Drop");
 ev.preventDefault();
 for (const item of ev.dataTransfer.items) {
 if (item.kind === "string" && item.type.match("^text/plain")) {
 // This item is the target node
 item.getAsString((s) => {
 ev.target.appendChild(document.getElementById(s));
 });
 } else if (item.kind === "string" && item.type.match("^text/html")) {
 // Drag data item is HTML
 console.log("... Drop: HTML");
 } else if (item.kind === "string" && item.type.match("^text/uri-list")) {
 // Drag data item is URI
 console.log("... Drop: URI");
 } else if (item.kind === "file" && item.type.match("^image/")) {
 // Drag data item is an image file
 const f = item.getAsFile();
 console.log("... Drop: File");
 }
 }
}