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<html><head><script src="https://ajax.googleapis.com/ajax/libs/jquery/3.7.1/jquery.min.js"></script><script>$(document).ready(function(){ $("button").click(function(event){ $("span").text(event.timeStamp); });});</script></head><body><p>The click event occurred <span style="color:red">unknown</span> milliseconds after January 1, 1970.</p><button>Click me</button></body></html>