What Are Async Functions?
Async functions are a modern way to write asynchronous code in JavaScript, making it easier to read and manage than traditional callbacks or even chained Promises. By adding the async keyword before a function, you signal that the function will handle asynchronous operations and can use the await keyword within its body. This allows you to write code that looks synchronous but actually performs non-blocking asynchronous tasks under the hood. Async functions are built on top of Promises, and they provide a cleaner, more intuitive syntax for working with asynchronous logic.
Even if you return a value directly from an async function, JavaScript automatically wraps it in a Promise. This means every async function always returns a Promise, regardless of whether you use await or simply return a value.
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Can you give an example of how to use async and await in JavaScript?
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Async functions are a modern way to write asynchronous code in JavaScript, making it easier to read and manage than traditional callbacks or even chained Promises. By adding the async keyword before a function, you signal that the function will handle asynchronous operations and can use the await keyword within its body. This allows you to write code that looks synchronous but actually performs non-blocking asynchronous tasks under the hood. Async functions are built on top of Promises, and they provide a cleaner, more intuitive syntax for working with asynchronous logic.
Even if you return a value directly from an async function, JavaScript automatically wraps it in a Promise. This means every async function always returns a Promise, regardless of whether you use await or simply return a value.
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