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Force time localization with in-app navigation #5

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Merged
bartonjs merged 1 commit into from
Mar 31, 2026
Merged

Force time localization with in-app navigation #5

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1 change: 1 addition & 0 deletions src/apireview.net/App.razor
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Original file line number Diff line number Diff line change
Expand Up @@ -44,5 +44,6 @@
<script src="_framework/blazor.web.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="js/bootstrap.bundle.min.js"></script>
<script src="js/localizeTime.js"></script>
</body>
</html>
37 changes: 1 addition & 36 deletions src/apireview.net/Pages/Schedule.razor
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Original file line number Diff line number Diff line change
Expand Up @@ -51,39 +51,4 @@
<p class="mt-3 text-muted">
Videos are streamed to the <a href="https://www.youtube.com/@@NETFoundation/streams">.NET Foundation YouTube channel</a>.
This calendar is available <a href="@CalendarService.Url">as an .ics file</a> you can add to your favorite calendar app.
</p>

@ladeak ladeak Mar 31, 2026 •
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I moved this as is to a js file, and added observeUrlChange to trigger it.


<script>
(function () {
// Update <time> elements to user's local time,
// but if the date would differ keep Pacific time and show PST/PDT
document.querySelectorAll('time[datetime]').forEach(function (el) {
var isoStr = el.getAttribute('datetime');
var dt = new Date(isoStr);
var cell = el.closest('[data-date]');
var cellDate = cell ? cell.getAttribute('data-date') : null;
var localDate = dt.getFullYear() + '-' +
String(dt.getMonth() + 1).padStart(2, '0') + '-' +
String(dt.getDate()).padStart(2, '0');
if (cellDate && localDate !== cellDate) {
// Date would change — keep Pacific time; label it PST or PDT from the offset
var offsetMatch = isoStr.match(/([+-]\d{2}):\d{2}$/);
var tzLabel = (offsetMatch && offsetMatch[1] === '-07') ? 'PDT' : 'PST';
el.textContent = el.textContent + '\u00a0' + tzLabel;
} else {
el.textContent = dt.toLocaleTimeString([], { hour: 'numeric', minute: '2-digit' });
}
});

// Re-highlight today/past cells using the user's local date
var now = new Date();
var todayStr = now.getFullYear() + '-' +
String(now.getMonth() + 1).padStart(2, '0') + '-' +
String(now.getDate()).padStart(2, '0');
document.querySelectorAll('[data-date]').forEach(function (el) {
var d = el.getAttribute('data-date');
el.classList.toggle('today', d === todayStr);
el.classList.toggle('past', d < todayStr);
});
})();
</script>
</p>
50 changes: 50 additions & 0 deletions src/apireview.net/wwwroot/js/localizeTime.js
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Original file line number Diff line number Diff line change
@@ -0,0 +1,50 @@
function localizeTime() {
// Update <time> elements to user's local time,
// but if the date would differ keep Pacific time and show PST/PDT
document.querySelectorAll('time[datetime]').forEach(function (el) {
var isoStr = el.getAttribute('datetime');
var dt = new Date(isoStr);
var cell = el.closest('[data-date]');
var cellDate = cell ? cell.getAttribute('data-date') : null;
var localDate = dt.getFullYear() + '-' +
String(dt.getMonth() + 1).padStart(2, '0') + '-' +
String(dt.getDate()).padStart(2, '0');
if (cellDate && localDate !== cellDate) {
// Date would change — keep Pacific time; label it PST or PDT from the offset
var offsetMatch = isoStr.match(/([+-]\d{2}):\d{2}$/);
var tzLabel = (offsetMatch && offsetMatch[1] === '-07') ? 'PDT' : 'PST';
el.textContent = el.textContent + '\u00a0' + tzLabel;
} else {
el.textContent = dt.toLocaleTimeString([], { hour: 'numeric', minute: '2-digit' });
}
});

// Re-highlight today/past cells using the user's local date
var now = new Date();
var todayStr = now.getFullYear() + '-' +
String(now.getMonth() + 1).padStart(2, '0') + '-' +
String(now.getDate()).padStart(2, '0');
document.querySelectorAll('[data-date]').forEach(function (el) {
var d = el.getAttribute('data-date');
el.classList.toggle('today', d === todayStr);
el.classList.toggle('past', d < todayStr);
});
}

const observeUrlChange = () => {
if (document.location.href.includes("/schedule")) {
localizeTime();
}
let oldHref = document.location.href;
const body = document.querySelector("body");
const observer = new MutationObserver(mutations => {
if (oldHref !== document.location.href) {
oldHref = document.location.href;
if (document.location.href.includes("/schedule")) {
localizeTime();
}
}
});
observer.observe(body, { childList: true, subtree: true });
};
window.onload = observeUrlChange;
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