Using Timers in JavaScript

Here is a full JavaScript program that demonstrates how to use timers (setTimeout and setInterval) in JavaScript:

This program creates a simple web page with three buttons: "Start Timeout", "Start Interval", and "Stop". It also creates a <p> element to display the output of the timers.

The program uses getElementById method to select the buttons and the output element and sets event listeners to the buttons.

When the "Start Timeout" button is clicked, the program uses the setTimeout function to set a timeout of 2 seconds. Once the timeout ends, the text in the output element is updated to indicate that the timeout has ended.

When the "Start Interval" button is clicked, the program uses the setInterval function to set an interval of 1 second. Every second, the text in the output element is updated by adding a "." to the end of it.

When the "Stop" button is clicked, the program uses the clearTimeout and clearInterval functions to stop the timeout and interval, and the text in the output element is updated to indicate that the timers have been stopped.

This script can be implemented in any software that supports HTML and JavaScript, such as a text editor like Sublime or Atom, and a web browser like Chrome, Firefox or Safari.

Please note that the setTimeout and setInterval are non-blocking function calls, this means that the script continues to execute while the timer is running, this is useful when you need to perform multiple tasks at the same time.