async await javascript return value code example
Example 1: async await
async function f() {
try {
let response = await fetch('/no-user-here');
let user = await response.json();
} catch(err) {
alert(err);
}
}
f();
Example 2: async await js
fetch('coffee.jpg')
.then(response => {
if (!response.ok) {
throw new Error(`HTTP error! status: ${response.status}`);
} else {
return response.blob();
}
})
.then(myBlob => {
let objectURL = URL.createObjectURL(myBlob);
let image = document.createElement('img');
image.src = objectURL;
document.body.appendChild(image);
})
.catch(e => {
console.log('There has been a problem with your fetch operation: ' + e.message);
});