Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

JavaScript

Joseph Quintiliano
seal-mask
.a{fill-rule:evenodd;}techdegree seal-36
Joseph Quintiliano
Front End Web Development Techdegree Graduate 14,338 Points
Posted by Joseph Quintiliano
.a{fill-rule:evenodd;}techdegree seal-36
Joseph Quintiliano
Front End Web Development Techdegree Graduate 14,338 Points

I am not understanding the difference between event delegation and propagation

i understand the idea of delegation, its more so the action of attaching an event listener to a parent node to activate the NEW child node

but the definition of propagation is totally throwing me off, i feel like im reading the same definition twice sometimes

1 Answer

Steven Parker
Steven Parker
229,788 Points
Steven Parker
Steven Parker
229,788 Points

Propagation is the aspect of events that causes them to passed up through the ancestor elements. It's also called "bubbling", and it's the reason that delegation works.

For more details, see the MDN Introduction to events page.