JavaScript closest
When it comes to finding relationships between elements, we traditionally think of a top-down approach. We can thank CSS and querySelector/querySelectorAll for that relationship in selectors. What if we want to find an element's parent based on selector?
To look up the element tree and find a parent by selector, you can use HTMLElement's closest method:
// Our sample element is an "a" tag that matches ul > li > a
const link = document.querySelector('li a');
const list = a.closest('ul');
closest looks up the ancestor chain to find a matching parent element -- the opposite of traditional CSS selectors. You can provide closest a simple or complex selector to look upward for!
![Chris Coyier’s Favorite CodePen Demos]()
David asked me if I'd be up for a guest post picking out some of my favorite Pens from CodePen. A daunting task! There are so many! I managed to pick a few though that have blown me away over the past few months. If you...
![CSS 3D Folding Animation]()
Google Plus provides loads of inspiration for front-end developers, especially when it comes to the CSS and JavaScript wonders they create. Last year I duplicated their incredible PhotoStack effect with both MooTools and pure CSS; this time I'm going to duplicate...
![Introducing LazyLoad 2.0]()
While improvements in browsers means more cool APIs for us to play with, it also means we need to maintain existing code. With Firefox 4's release came news that my MooTools LazyLoad plugin was not intercepting image loading -- the images were loading regardless of...
![Duplicate the jQuery Homepage Tooltips]()
The jQuery homepage has a pretty suave tooltip-like effect as seen below:
The amount of jQuery required to duplicate this effect is next to nothing; in fact, there's more CSS than there is jQuery code! Let's explore how we can duplicate jQuery's tooltip effect.
The HTML
The overall...
