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How to detect DIV’s dimension changed?

I’ve the following sample html, there is a DIV which has 100% width. It contains some elements. While performing windows re-sizing, the inner elements may be re-positioned, and the dimension of the div may change. I’m asking if it is possible to hook the div’s dimension change event? and How to do that? I currently bind the callback function to the jQuery resize event on the target DIV, however, no console log is outputted, see below:

Before Resize enter image description here

JavaScript

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Answer

There is a very efficient method to determine if a element’s size has been changed.

http://marcj.github.io/css-element-queries/

This library has a class ResizeSensor which can be used for resize detection.
It uses an event-based approach, so it’s damn fast and doesn’t waste CPU time.

Example:

JavaScript

Please do not use the jQuery onresize plugin as it uses setTimeout() in combination with reading the DOM clientHeight/clientWidth properties in a loop to check for changes.
This is incredible slow and inaccurate since it causes layout thrashing.

Disclosure: I am directly associated with this library.

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