fetch api code example

Example 1: fecth post json

(async () => {
  const rawResponse = await fetch('https://httpbin.org/post', {
    method: 'POST',
    headers: {
      'Accept': 'application/json',
      'Content-Type': 'application/json'
    },
    body: JSON.stringify({a: 1, b: 'Textual content'})
  });
  const content = await rawResponse.json();

  console.log(content);
})();

Example 2: fetch api

// Error handling while fetching API

const url = "http://dummy.restapiexample.com/api/v1/employee/40";
fetch(url) //404 error
     .then( res => {
          if (res.ok) {
                return res.json( );
          } else {
                return Promise.reject(res.status); 
           }
      })
      .then(res => console.log(res))
      .catch(err => console.log('Error with message: ${err}') );

Example 3: fetch api

// Making get requests

const url = "http://dummy.restapiexample.com/api/v1/employees"; 
fetchurl()
     .then(res => {
            console.log(res);
})
      .catch(err => {
             console.log('Error: ${err}' ); 
});

Example 4: fetch api

// Making post request

const url = 'http://dummy.restapiexample.com/api/v1/create'
const user = {
      name: 'Rahul'
      age: '16'
      salary: '000'
};

const options = {
   method: 'POST'
   body: JSON.stringify(user), 
}

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

Example 5: fetch api

// Fetch and Async/Await

const url = 'http://dummy.restapiexample.com/api/v1/employees'; 
const fetchUsers = async () => {
    try {
       const res = await fetch(url);
     // check for 404 error
       if (!res.ok) { 
           throw new Error(res.status);
       }
       const data = await res.json();
          console.log(data);
       }
       // catch block for network errors
       catch (error) { 
            console.log(error); 
        }
}
fetchUsers( );

Example 6: fetch api

fetch('http://example.com/movies.json')
  .then(response => response.json())
  .then(data => console.log(data));