Async Await Javascript

• async and await are used to handle asynchronous operations more cleanly & efficiently, avoiding the complexity of using raw Promises or callbacks.
• async: Declares a function as asynchronous, which means it will always return a Promise. You can use await inside a async function.
• await: Pauses the execution of an async function until a Promise is resolved or rejected.
• It allows you to write asynchronous code in a synchronous style, making it easier to read & write.
• Why was async await created?
  • To simplify working with Promises and to make asynchronous code easier to read & write.
  • Asynchronous code can be written in a way that looks synchronous
  • Avoids Callback Hell Javascript
  • Before async/await, handling asynchronous operations required chaining promises using .then() & .catch(), which could lead to complex code, especially in cases of multiple async operations Callback Hell Javascript

async function fetchData() {
	let result = await someAsyncFunction(); // Waits for the Promise to resolve
	console.log(result);
}

• Error Handling with Try Catch Javascript

async function fetchData() {
	try {
		let result = await someAsyncFunction(); // Waits for the Promise to resolve
		console.log(result);
	} catch (err) {
		console.error(err);
	}
}