PATCH

The PATCH method applies partial modifications to a resource.

Usage

While PUT replaces the entire resource, PATCH only updates the fields specified in the request. PATCH is not necessarily idempotent, although it can be designed to be.

Bun / Node.js

const response = await fetch('https://api.example.com/data/123', {
    method: 'PATCH',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify({ age: 30 }) // Only updating age
});