Promises, handlers, and chains are foundations of modern JavaScript, but they can be tricky. Here are four common traps to watch out for.

Callbacks work fine for handling asynchronous code in JavaScript, but promises and the async and await keywords are cleaner and more flexible.

17 February, 2014. It was a Monday. Promises certainly aren’t the holy grail of asynchronous flow control in JavaScript. There are no silver bullets, after all. Promises are a tremendously important ...