Timeouts & Intervals

Timers are used to schedule functions to happen at a later time.

Here we create a timer that will print "Hello, World!" to the console after 1 second (1000 milliseconds).

setTimeout(() => console.log("Hello, World!"), 1000);

You can also cancel a timer after it has been created.

const timerId = setTimeout(() => console.log("No!"), 1000);
clearTimeout(timerId);

Intervals can be created to repeat a function at a regular interval.

setInterval(() => console.log("Hey!"), 1000);

Intervals can also be cancelled.

const intervalId = setInterval(() => console.log("Nope"), 1000);
clearInterval(intervalId);

Run this example locally using the Deno CLI:

deno run https://raw.githubusercontent.com/denoland/deno-docs/main/by-example/timers.ts

Additional resources: