no-invalid-fetch-options.md

Pattern: Body parameter with GET/HEAD fetch request

Issue: -

Description

Providing a body with GET or HEAD requests in fetch() or new Request() calls will cause a TypeError. These request methods don't support request bodies according to HTTP specifications.

Examples

Example of incorrect code:

const response = await fetch("/", { method: "GET", body: "foo=bar" });
const request = new Request("/", { method: "HEAD", body: "foo=bar" });

Example of correct code:

const response = await fetch("/", { method: "POST", body: "foo=bar" });
const request = new Request("/", { method: "POST", body: "foo=bar" });