fetch in fetch code example
Example 1: fetch js
async function postData(url = '', data = {}) {
const response = await fetch(url, {
method: 'POST',
mode: 'cors',
cache: 'no-cache',
credentials: 'same-origin',
headers: {
'Content-Type': 'application/json'
},
redirect: 'follow',
referrerPolicy: 'no-referrer',
body: JSON.stringify(data)
});
return response.json();
}
postData('https://example.com/answer', { answer: 42 })
.then(data => {
console.log(data);
});
Example 2: .fetch method
fetch('http://example.com/data.json')
.then(data => data);
.catch(err => console.log(err));
Example 3: javascript fetch
var myHeaders = new Headers();
var myInit = { method: 'GET',
headers: myHeaders,
mode: 'cors',
cache: 'default' };
fetch('flowers.jpg',myInit)
.then(function(response) {
return response.blob();
})
.then(function(myBlob) {
var objectURL = URL.createObjectURL(myBlob);
myImage.src = objectURL;
});