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JavaScript One Solution

Dou Sun
Dou Sun
2,754 Points
Posted by Dou Sun
Dou Sun
2,754 Points

I have a question about the final part

so my code is like this

// 3. Add the class "strike" to the restaurant name each time it's double clicked. Use event delegation on the ul element to listen for a click event on the ul's list items

$('li').on('dblclick', function(){ $(this).toggleClass('strike'); });

it works just for the 4 'li' elements that already existed in the HTML file, but not for the new restaurants (new 'li' element) that I added in the second part. why?

1 Answer

Steven Parker
Steven Parker
229,708 Points
Steven Parker
Steven Parker
229,708 Points

Those listeners are attached directly to the original list items. New ones won't have listeners unless you attach them specifically to each one. That's why the instructions say "Use event delegation on the ul element ...".

A delegated handler will work with both the original items and any that are created later, since the event will propagate ("bubble up") to the parent ul element.