Demonstrating the power of event delegation with dynamic content
⚡ ONLY 5 6 EVENT LISTENERS for this ENTIRE SPA! ⚡
ONE handler on body handles ALL events - no matter when elements are created!
Create new elements dynamically - they work instantly without new listeners!
Add, complete, and delete todos - all handled by the same body listener!
Switch between tabs - all handled by event delegation!
This is the content of tab 1. Click buttons below to test event delegation:
This is the content of tab 2. These buttons were here from the start:
This is the content of tab 3. Event delegation works everywhere:
All form events handled by the same body listener with delegation:
These are the event listeners assigned to this entire SPA!
No additional listeners will be created - all dynamic content uses these same 5 6 listeners via event delegation.
Watch how ONE body listener handles ALL events (max: 50):