Creating tasks using timers

So far in this chapter, we've had a look at all the inner workers of the web browser environment, and where the JavaScript interpreter fits in this environment. What does all this have to do with applying concurrency principles to our code? With the knowledge of what's happening under the hood, we have a greater insight into what's happening when a given chunk of our code is run. Particularly, we know what's happening relative to other code chunks; time ordering is a crucial concurrency property.

This being said, let's actually write some code. In this section, we'll use timers to explicitly add tasks to the task queue. We'll also learn when and where the JavaScript interpreter jumps in and starts executing our code.

Using setTimeout()

The setTimeout() function is staple in any JavaScript code. It's used to execute code at some point in the future. New JavaScript programmers often trip over the setTimeout() function because...