JavaScript Promise
A Promise is a guaranteed placeholder value for what a function or series of functions will return. It’s a promise to return a value eventually. The function swears this time is different. You can trust it. It …
Tag
Async programming
A focused thread through the archive.
JavaScript Callbacks
Brief History of Callbacks It all starts with the callback function. A callback function is just a plain JavaScript function that is passed into another function as an argument. That’s it. Nothing special. This …