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Showing content from https://developer.mozilla.org/zh-CN/docs/Web/API/Request/arrayBuffer below:

Request.arrayBuffer() - Web API | MDN

Request.arrayBuffer()

Baseline Widely available

Request 接口的 arrayBuffer() 方法读取请求体并将其作为一个 promise 返回,该 promise 将兑现一个 ArrayBuffer。

语法 参数

无。

返回值

一个 promise,会兑现一个 ArrayBuffer。

示例
const myArray = new Uint8Array(10);

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

request.arrayBuffer().then(function (buffer) {
  // do something with the buffer sent in the request
});
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