Using JavaScript code covered in lessons 1 thru 12, create a web application that provides three timers similar to the screen shot below. The web application buttons function as follows:

Set: Prompts for minutes, minimum 1, maximum 30. The corresponding timer field is updated to reflect the number of minutes entered. While the corresponding timer is counting up/down, the Set button performs no action.

Count Up: Sets the corresponding timer to 0:00 and counts up in one second intervals until the timer matches the number of minutes previously set.

Count Down: Counts down the previously set corresponding timer in one second intervals until 0:00 and then ends.

Stop: Stops the corresponding timer and ends the count up/down of the timer.

Disable buttons that should not be selected when a button is selected. E.g., Count Up disables Set, Count Down. Enables Stop.