Home » Web » CSS » Getting To Know The MutationObserver API

Getting To Know The MutationObserver API

MutationObserver watches the DOM, specifically the places you tell it to, like:

document.querySelector('#watch-this');

…and it can tell you (trigger a callback) when stuff happens — like when a child is added, removed, changed, or a number of other things.

I used it just the other day to watch the <head> of a Pen and detected newly-injected processed Sass code, so you could use CodePen to see Sass and CSS side by side:

See the Pen
Sassmeister clone
by Chris Coyier (@chriscoyier)
on CodePen.

Direct Link to ArticlePermalink

The post Getting To Know The MutationObserver API appeared first on CSS-Tricks.

Feed Source: CSS-Tricks
Article Source: Getting To Know The MutationObserver API

About Admin

Powered by WP Robot