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Make Dallas searchable in the timezone selector #18

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Merged
spxrogers merged 1 commit into from
Aug 24, 2026
Merged

Make Dallas searchable in the timezone selector #18

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17 changes: 15 additions & 2 deletions index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -901,6 +901,12 @@ <h1 class="event-name" id="cd-name"></h1>
})();
const DETECTED_TZ = Intl.DateTimeFormat().resolvedOptions().timeZone;

// Cities with no IANA zone of their own (e.g. Dallas uses America/Chicago)
// but that people search by city name.
const CITY_ALIASES = {
'america/chicago': ['dallas'],
};

function tzOffsetLabel(tz) {
try {
const fmt = new Intl.DateTimeFormat('en-US', { timeZone: tz, timeZoneName: 'shortOffset' });
Expand Down Expand Up @@ -1187,12 +1193,19 @@ <h1 class="event-name" id="cd-name"></h1>
list.innerHTML = '';
const q = (filter || '').toLowerCase();
const filtered = q
? ALL_TIMEZONES.filter(tz => tz.toLowerCase().includes(q) || tzOffsetLabel(tz).toLowerCase().includes(q))
? ALL_TIMEZONES.filter(tz => {
const key = tz.toLowerCase();
return key.includes(q) || tzOffsetLabel(tz).toLowerCase().includes(q) ||
(CITY_ALIASES[key] || []).some(alias => alias.includes(q));
})
: ALL_TIMEZONES;
filtered.slice(0, 50).forEach(tz => {
const li = document.createElement('li');
li.className = 'tz-option' + (tz === selectedTz ? ' active' : '');
li.textContent = tzFriendlyName(tz);
const matchedAlias = q && (CITY_ALIASES[tz.toLowerCase()] || []).find(alias => alias.includes(q));
li.textContent = matchedAlias
? `${tzFriendlyName(tz)} — ${matchedAlias.replace(/\b\w/g, c => c.toUpperCase())}`
: tzFriendlyName(tz);
li.addEventListener('click', (e) => {
e.stopPropagation();
selectedTz = tz;
Expand Down
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