Counter Solution

Yangshun Tay
Yangshun TayEx-Meta Staff Engineer
Recommended duration to spend during interviews
5 mins
Users completed

This is a short question which only requires one state variable, which is the number of times the button has been clicked (count). Attach a 'click' event listener to the <button> and each time it is clicked, increment the count value and update the text with that value.

Since only the count needs to change, we can use a <span> to target the count text and update its textContent whenever a click event is fired.

Test Cases

  • Click on the counter to increment the count value by one.
  • Click multiple times and check that the count value increases on each click.