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(1)Tạo Button Giờ Trên Website
<SCRIPT language=JavaScript> <! Begin
day = new Date(); miVisit = day.getTime(); function clock() {
dayTwo = new Date();
hrNow = dayTwo.getHours(); mnNow = dayTwo.getMinutes(); scNow = dayTwo.getSeconds(); miNow = dayTwo.getTime(); if (hrNow == 0) {
hour = 12; ap = " AM";
} else if(hrNow <= 11) { ap = " AM";
hour = hrNow;
} else if(hrNow == 12) { ap = " PM";
hour = 12;
} else if (hrNow >= 13) { hour = (hrNow - 12); ap = " PM";
}
if (hrNow >= 13) { hour = hrNow - 12; }
if (mnNow <= 9) { = "0" + mnNow; }
else (min = mnNow) if (scNow <= 9) { secs = "0" + scNow; } else {
secs = scNow; }
time = hour + ":" + + ":" + secs + ap; document.form.button.value = time; self.status = time;
setTimeout('clock()', 1000); }
function timeInfo() { milliSince = miNow;
milliNow = miNow - miVisit;
secsVisit = Math.round(milliNow / 1000); minsVisit = Math.round((milliNow / 1000) / 60);
alert("There have been " + milliSince + " milliseconds since midnight, January 1, 1970 "
(2)+ secsVisit + " seconds."); }
document.write("<center><form name=\"form\">" + "<input type=button value=\"Click for info!\""
+ " name=button onClick=\"timeInfo()\"></form></center>"); onError = null;