DataTransferItem.getAsString()

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's string 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 Standard
# dom-datatransferitem-getasstring-dev

Browser compatibility

BCD tables only load in the browser

See also