Request: json() method

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.

The json() method of the Request interface reads the request body and returns it as a promise that resolves with the result of parsing the body text as JSON.

Note that despite the method being named json(), the result is not JSON but is instead the result of taking JSON as input and parsing it to produce a JavaScript object.

Syntax

js
json()

Parameters

None.

Return value

A Promise that resolves to a JavaScript object. This object could be anything that can be represented by JSON — an object, an array, a string, a number…

Examples

js
const obj = { hello: "world" };

const request = new Request("/myEndpoint", {
  method: "POST",
  body: JSON.stringify(obj),
});

request.json().then((data) => {
  // do something with the data sent in the request
});

Specifications

Specification
Fetch Standard
# ref-for-dom-body-json①

Browser compatibility

BCD tables only load in the browser

See also