Hai Nguyen
Hai Nguyen
Programming language:Javascript
2021-06-23 06:27:41
0
Q:

ejemplo async await javascript

Peachy
Peachy
Code: Javascript
2021-09-06 23:22:11 
/* Notes:
	1. written like synchronous code
    2. compatible with try/catch blocks
    3. avoids chaining .then statements
    4. async functions always return a promise
    5. function pauses on each await expression
    6. A non promise value is converted to 
       Promise.resolve(value) and then resolved
*/

// Syntax
// Function Declaration
async function myFunction(){
  await ... // some code goes here
}
  
// Arrow Declaration
const myFunction2 = async () => {
  await ... // some code goes here
}
  
 // OBJECT METHODS

const obj = {
	async getName() {
		return fetch('https://www.example.com');
	}
}

// IN A CLASS

class Obj {
	// getters and setter CANNOT be async
	async getResource {
		return fetch('https://www.example.com');
	}
}
11
weidler
weidler
Code: Javascript
2021-01-24 06:10:11 
// Async/Await
const asyncGreeting = async () => 'Greetings';
// Promises
const promiseGreeting = () => new Promise(((resolve) => {
  resolve('Greetings');
}));
asyncGreeting().then(result => console.log(result));
promiseGreeting().then(result => console.log(result));
0

Tags

Related

New to Communities?

Join the community