Callbacks were the only natively supported way to deal with async code in JavaScript ... and promises, and see how we can use each technique to coordinate multiple layers of execution.

Developers use JavaScript promises to model asynchronous operations in web and server-side programs. Here's a quick look at five ways to use promises in your code. Promises are a central mechanism ...

Asynchronous programming in JavaScript leverages features like callbacks, promises and async/await to sidestep this issue by allowing other code to run ... blocking the execution flow until ...