1(async () => {
2  const rawResponse = await fetch('https://httpbin.org/post', {
3    method: 'POST',
4    headers: {
5      'Accept': 'application/json',
6      'Content-Type': 'application/json'
7    },
8    body: JSON.stringify({a: 1, b: 'Textual content'})
9  });
10  const content = await rawResponse.json();
11
12  console.log(content);
13})();

1//Obj of data to send in future like a dummyDb
2const data = { username: 'example' };
3
4//POST request with body equal on data in JSON format
5fetch('https://example.com/profile', {
6  method: 'POST',
7  headers: {
8    'Content-Type': 'application/json',
9  },
10  body: JSON.stringify(data),
11})
12.then((response) => response.json())
13//Then with the data from the response in JSON...
14.then((data) => {
15  console.log('Success:', data);
16})
17//Then with the error genereted...
18.catch((error) => {
19  console.error('Error:', error);
20});
21
22//																		Yeah

1fetch('https://example.com/profile', {
2  method: 'POST',
3  headers: { 'Content-Type': 'application/json' },
4  body: JSON.stringify({
5  	'foo': 'bar'
6  }),
7})
8  .then((res) => res.json())
9  .then((data) => {
10    // Do some stuff ...
11  })
12  .catch((err) => console.log(err));

1// data to be sent to the POST request
2let _data = {
3  title: "foo",
4  body: "bar", 
5  userId:1
6}
7
8fetch('https://jsonplaceholder.typicode.com/posts', {
9  method: "POST",
10  body: JSON.stringify(_data),
11  headers: {"Content-type": "application/json; charset=UTF-8"}
12})
13.then(response => response.json()) 
14.then(json => console.log(json))
15.catch(err => console.log(err));

1fetch('https://jsonplaceholder.typicode.com/posts', {
2  method: 'POST',
3  headers: {
4    'Content-Type': 'application/json',
5  },
6   body: JSON.stringify({
7     // your expected POST request payload goes here
8      title: "My post title",
9      body: "My post content."
10      })
11})
12  .then(res => res.json())
13  .then(data => {
14   // enter you logic when the fetch is successful
15    console.log(data)
16  })
17  .catch(error => {
18  // enter your logic for when there is an error (ex. error toast)
19   console.log(error)
20  })  
21

1componentDidMount() {
2    // Simple POST request with a JSON body using fetch
3    const requestOptions = {
4        method: 'POST',
5        headers: { 'Content-Type': 'application/json' },
6        body: JSON.stringify({ title: 'React POST Request Example' })
7    };
8    fetch('https://jsonplaceholder.typicode.com/posts', requestOptions)
9        .then(response => response.json())
10        .then(data => this.setState({ postId: data.id }));
11}