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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