Stack Overflow: flag old answers
Adds a warning above answers older than a set year to remind you the solution may be out of date.
Code to copy
/* Flag answers older than a chosen year as possibly outdated */
(function () {
var CUTOFF = 2018;
function mark() {
document.querySelectorAll('#answers .answer').forEach(function (a) {
if (a.dataset.sofAge) return;
var t = a.querySelector('.user-action-time time, .relativetime');
var iso = t && (t.getAttribute('datetime') || t.getAttribute('title'));
if (!iso) return;
var year = new Date(iso).getFullYear();
if (!isNaN(year) && year < CUTOFF) {
a.dataset.sofAge = '1';
var tag = document.createElement('div');
tag.textContent = '⚠ Possibly outdated (' + year + ')';
tag.style.cssText = 'background:#fff4d6;color:#7a5b00;padding:4px 8px;border-radius:4px;margin:6px 0;font-size:12px;font-weight:600;';
var cell = a.querySelector('.answercell') || a;
cell.insertBefore(tag, cell.firstChild);
}
});
}
mark();
new MutationObserver(mark).observe(document.body, { childList: true, subtree: true });
})();How to use this example
- Copy the code with the button above.
- Install JustZix (2 minutes) and open the extension on the target page.
- Add a new rule matching that page.
- Paste the code into the rule's JavaScript panel and save — it runs on every page visit.
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