4 ms·
<img src="about:logo" onload="alert('Browser is Firefox!')" /> Maybe this too? <img src="about:logo" onerror="alert('Browser is NOT Firefox!')" />
by dpweb 12y ago
<img src="about:logo" onload="alert('Browser is Firefox!')" />
Maybe this too?
<img src="about:logo" onerror="alert('Browser is NOT Firefox!')" />