Supertime.js is a micro-library that takes time in whatever zone be, and converts it to the user's local time.
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<html> | |
<head> | |
<title>Supertime Demo</title> | |
</head> | |
<body> | |
<span class="supertime" data-timezone="UTC+2">12:00</span> | |
<script src="https://bit.ly/supertimejs"></script> | |
</body> | |
</html> |
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var times = document.getElementsByClassName("supertime"); | |
for (var i = 0; i < times.length; i++) { | |
var timezone = times[i].dataset.timezone; | |
var timeoffset = calculatetimeoffset(timezone.substring(4)); | |
var flag = "add"; | |
var giventime = times[i].innerHTML; | |
if (timezone.charAt(3) == "+") { | |
flag = "subtract"; | |
} | |
giventime = absolutetime(giventime); | |
var utctime; | |
if (flag == "add") { | |
utctime = giventime + timeoffset; | |
} else { | |
utctime = giventime - timeoffset; | |
} | |
var utcoffset = new Date().getTimezoneOffset(); | |
var adjustedtime = utctime - utcoffset; | |
times[i].innerHTML = formatTime(adjustedtime); | |
} | |
function calculatetimeoffset(timestring) { | |
var time_division = timestring.split(":"); | |
var offset; | |
if (time_division.length > 1) { | |
offset = parseInt(time_division[0]) * 60 + parseInt(time_division[1]); | |
} else { | |
offset = parseInt(time_division[0]) * 60; | |
} | |
return offset; | |
} | |
function absolutetime(timestring_2) { | |
var time_division_1 = timestring_2.split(":"); | |
var absolute; | |
if (time_division_1.length > 1) { | |
absolute = parseInt(time_division_1[0]) * 60 + parseInt(time_division_1[1]); | |
} else { | |
absolute = parseInt(time_division[0]) * 60; | |
} | |
return absolute; | |
} | |
function formatTime(settime) { | |
var hours = Math.floor(settime / 60); | |
var minutes = settime % 60; | |
newtime = hours + ":" + minutes; | |
return newtime; | |
} |
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