WebClock/clock.js
efrick 122f33fbd6 Update to the clock.
Now allowing for display of the time in the original timezone as well as
the user selected one.
I've also added a rule to the CSS file to better display the selection
list on mobile screens.
2020-04-15 15:26:21 -04:00

52 lines
2.5 KiB
JavaScript

/*Clock functionality. When the page is loaded it starts a one second
* long loop to update the time displayed on the page.
*/
window.onload = startInterval;
function startInterval(){
setInterval("startTime();",1000);
}
/* The function to update and format the time displayed on the page.
* The formating of Date() objects useing .toLocalString() is documented
* at the following urls:
* https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/DateTimeFormat/DateTimeFormat
* https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/toLocaleString
*/
function startTime(){
var current_time = new Date(),
our_tz = current_time.getTimezoneOffset;
document.getElementById('time_title').innerHTML = "Time is: "
+ current_time.toLocaleString('en-US',
{timeZone: current_tz,
hourCycle:'h24',
timeStyle:'long',
hour: '2-digit',
minute:'2-digit',
second:'2-digit',
timeZoneName:'short'});
document.getElementById('time_body').innerHTML = current_time.toLocaleString('en-EN' ,{
timeZone: current_tz,
dateStyle:'long',
hourCycle:'h24',
weekday:'short',
month:'short',
day:'2-digit',
year:'numeric',
hour:'2-digit',
minute:'2-digit',
second:'2-digit',});
if(original_tz != null){
document.getElementById('time_original').innerHTML = current_time.toLocaleString('en-EN' ,{
timeZone: original_tz,
dateStyle:'long',
hourCycle:'h24',
weekday:'short',
month:'short',
day:'2-digit',
year:'numeric',
hour:'2-digit',
minute:'2-digit',
second:'2-digit'});
}
document.getElementById('JStz').innerHTML = current_tz;
}