demo.html
336 Bytes
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
</body>
<script>
var ua = navigator.userAgent.toLowerCase();
alert(ua)
if (ua.match(/mqqbrowser/i) == "mqqbrowser") {
// $(".shadow-img").fadeIn(500)
alert("我真的是QQ")
}
</script>
</html>