javascript fetch api post

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));

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}

1async function postData(url = '', data = {}) {
2  // Default options are marked with *
3  const response = await fetch(url, {
4    method: 'POST', // *GET, POST, PUT, DELETE, etc.
5    mode: 'cors', // no-cors, *cors, same-origin
6    cache: 'no-cache', // *default, no-cache, reload, force-cache, only-if-cached
7    credentials: 'same-origin', // include, *same-origin, omit
8    headers: {
9      'Content-Type': 'application/json'
10      // 'Content-Type': 'application/x-www-form-urlencoded',
11    },
12    redirect: 'follow', // manual, *follow, error
13    referrerPolicy: 'no-referrer', // no-referrer, *no-referrer-when-downgrade, origin, origin-when-cross-origin, same-origin, strict-origin, strict-origin-when-cross-origin, unsafe-url
14    body: JSON.stringify(data) // body data type must match "Content-Type" header
15  });
16  return response.json(); // parses JSON response into native JavaScript objects
17}
18
19postData('', )
20  .then(data => {
21    console.log(data); // JSON data parsed by `data.json()` call
22  });

1fetch('http://example.com/movies.json')
2  .then((response) => {
3    return response.json();
4  })
5  .then((data) => {
6    console.log(data);
7  });
8