Callbacks, promises, and async/await
To resolve these issues, we need to force JavaScript to execute code in a linear order. JavaScript provides three solutions – callbacks, promises, and async/await keywords. JavaScript promises and callbacks are two ways of knowing when the asynchronous call has a result. Callbacks allow you to execute a function once a response is received. Promises do the same and allow you to specify an easily readable order for multiple operations, as well as handle error cases. However, did you know there was an even easier way to deal with promises called synchronous mode?
