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JavaScript Object-Oriented JavaScript (2015) Practice Project User Interface Code

Marko Vojvodic
Marko Vojvodic
32,207 Points

Problem with button responding on second question?

Hi guys i have a problem with button responding, when second question occure. I've tried to solve this problem but i couldn't find answer. I've coded different.

Here is my work https://w.trhou.se/5qor4wwnpu

1 Answer

Steven Parker
Steven Parker
230,231 Points

Your new buttons don't have event listeners.

In app.js, after you call quiz.renderIn which creates the button elements, you attach event listeners to each button. But when the buttons are clicked, the original button elements are replaced with new ones in another call to quiz.renderIn. The newly-created buttons never get event listeners, so clicking on them doesn't cause any action.

I can think of 3 ways to resolve this issue offhand:

  • attach new event listeners each time the buttons are re-created
  • don't remove and replace the buttons when the question changes, so the original handlers still work
  • use a delegated event handler that will operate with both current buttons and those created later
Marko Vojvodic
Marko Vojvodic
32,207 Points

Thank a lot, i've just solve the problem attaching new event listener