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Explanation

POST method is used to send data to
the server to create a resource.

Code:

fetch('https://api.example.com/users', 
{  method: 'POST'});

Explanation

Sending JSON data in POST request.

Code:

fetch('https://api.example.com/users', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json'
 },
  body: JSON.stringify({ name: 'John' })
});

Explanation

Handling POST response.

Code:

fetch(url, options)
  .then(res => res.json())
  .then(data => console.log(data));

Explanation

POST is not idempotent
(multiple calls create multiple resources).

Code:

// Calling POST multiple times may create duplicate records

Explanation

Using async/await with POST.

Code:

const res = await fetch(url, {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({ name: 'Alice' })
});