<p>From my experiments, FocusEvents 'blur' and 'focus' come between MouseEvent 'mousedown' and 'mouseup'. (Chrome, Firefox)</p>
<p>Below are the experiments.</p>
<div class="embed-wrapper"><div class="embed-loading"><div class="loadingRow"></div><div class="loadingRow"></div></div><a class="embed-card" href="https://codepen.io/bada3670/pen/wvjJVXZ">https://codepen.io/bada3670/pen/wvjJVXZ</a></div>


From my experiments, FocusEvents 'blur' and 'focus' come between MouseEvent 'mousedown' and 'mouseup'. (Chrome, Firefox)

Below are the experiments.

%[https://codepen.io/bada3670/pen/wvjJVXZ]

examplist

examplist

FocusEvent and MouseEvent: Which Occurs Fisrt?