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!

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

Alex Watts
Alex Watts
8,396 Points
Posted by Alex Watts
Alex Watts
8,396 Points

Adding 'event' to a functions parameter?

Hello,

I do not understand why 'event' is used in the functions parameter. What does it do and why?

$("#hm-gallery a").click(function(event){  <---- event
 event.preventDefault();
 var getLink = $(this).attr("href");
 console.log(getLink);
});

Thanks :)

1 Answer

Steven Parker
Steven Parker
225,742 Points
Steven Parker
Steven Parker
225,742 Points

The handler is called with an event object as the parameter. This object makes several pieces of information about the event available to the handler.

It also makes several methods available, including preventDefault, which is being used by your handler.