Answers for "understanding fetch api"

41

fetch api javascript

fetch('http://example.com/songs')
	.then(response => response.json())
	.then(data => console.log(data))
	.catch(err => console.error(err));
Posted by: Guest on April-22-2020
4

fetch get request

// Example POST method implementation:
async function postData(url = '', data = {}) {
  // Default options are marked with *
  const response = await fetch(url, {
    method: 'POST', // *GET, POST, PUT, DELETE, etc.
    mode: 'cors', // no-cors, *cors, same-origin
    cache: 'no-cache', // *default, no-cache, reload, force-cache, only-if-cached
    credentials: 'same-origin', // include, *same-origin, omit
    headers: {
      'Content-Type': 'application/json'
      // 'Content-Type': 'application/x-www-form-urlencoded',
    },
    redirect: 'follow', // manual, *follow, error
    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
    body: JSON.stringify(data) // body data type must match "Content-Type" header
  });
  return response.json(); // parses JSON response into native JavaScript objects
}

postData('https://example.com/answer', { answer: 42 })
  .then(data => {
    console.log(data); // JSON data parsed by `data.json()` call
  });
Posted by: Guest on September-13-2020
2

.fetch method

fetch('http://example.com/data.json')
  .then(data => data);
  .catch(err => console.log(err));
Posted by: Guest on November-09-2020
1

fetch api

fetch('http://example.com/movies.json')
  .then(response => response.json())
  .then(data => console.log(data));
Posted by: Guest on May-27-2021
0

fetch api javascript

fetch('https://picsum.photos/600/300')
    .then(res => res.blob())
    .then(blob => {
        let img = document.createElement('img');
        console.log(img);
        img.src = URL.createObjectURL(blob);
        document.body.appendChild(img)
        docuemnt.querySelector('body').appendChild(img);
    });
Posted by: Guest on September-04-2021

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