Request.formData()

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since March 2017.

Request 接口的 formData() 方法读取请求体并将其作为 promise 返回，该 promise 将兑现一个 FormData 对象。

语法

js
formData()

参数

无。

返回值

一个 Promise，会兑现一个 FormData 对象。

示例

js
const formData = new FormData();
const fileField = document.querySelector('input[type="file"]');

formData.append("username", "abc123");
formData.append("avatar", fileField.files[0]);

const request = new Request("/myEndpoint", {
  method: "POST",
  body: formData,
});

request.formData().then(function (data) {
  // do something with the formdata sent in the request
});

规范

Specification
Fetch Standard
# ref-for-dom-body-formdata①

浏览器兼容性

BCD tables only load in the browser

参见