something wrong with el.clientHeight

[a1mersnow]

I think it shouldn't contain border width.

I test it in chrome.

When border-box clientHeight means height - borderWidth
When content-box clientHeight means height + padding

It looks like el.getBoundingRect().height is equal to el.offsetHeight.

[item4]

You're right. clientWidth/Height do not contain border. [Reference]

[camsong]

@aimergenge Thanks for reporting.