This plugin lets you listen for when a CSS property, or properties, changes on element. It utilizes Mutation Observers to mimic the DOMAttrModified (Mutation Events API) and propertychange (Internet Explorer) events.
There is both a jQuery-specific plugin as well as a library agnostic version of this plugin available.
bower install darcyclarke/watch.js --save
// Watch for width or height changes and log values
let $div = document.querySelectorAll('div')
watch($div, 'width height', function() {
console.log(this.style.width, this.style.height)
})// Watch for width or height changes and log values
$('div').watch('width height', function() {
console.log(this.style.width, this.style.height)
})This library utilizes the Polymer team's Mutation Observers and WeakMap Polyfills. They are included by default which bulks the library a bit. Depending on future usage, I may choose to references these as bower dependancies.