arXiv: mark papers as read
When you click a PDF link, stores the paper ID locally and dims its rows in listings so you can see what you have already read.
Code to copy
// Mark papers as "read" once you click their PDF link, dim them in listings
(function () {
var KEY = 'jzArxReadIds';
function load() {
try { return JSON.parse(localStorage.getItem(KEY) || '{}') || {}; }
catch (e) { return {}; }
}
function save(map) { localStorage.setItem(KEY, JSON.stringify(map)); }
function markId(id) {
if (!id) { return; }
var m = load(); m[id] = Date.now(); save(m);
apply();
}
function extractId(href) {
var m = href.match(/\/(?:abs|pdf)\/([\w.\-\/]+?)(?:v\d+)?(?:\.pdf)?$/);
return m ? m[1] : null;
}
document.addEventListener('click', function (e) {
var a = e.target.closest('a[href*="/pdf/"], a[href$=".pdf"]');
if (!a) { return; }
markId(extractId(a.getAttribute('href') || ''));
}, true);
function apply() {
var read = load();
document.querySelectorAll('a[href*="/abs/"]').forEach(function (a) {
var id = extractId(a.getAttribute('href') || '');
if (!id || !read[id]) { return; }
var row = a.closest('dt, li, tr, .arxiv-result') || a.parentElement;
if (row && !row.dataset.jzArxRead) {
row.dataset.jzArxRead = '1';
row.style.opacity = '0.55';
row.style.filter = 'grayscale(0.5)';
var tag = document.createElement('span');
tag.textContent = ' ✓ read';
tag.style.cssText = 'color:#0a7c3a;font-weight:700;font-size:12px;margin-left:6px;';
a.appendChild(tag);
}
});
}
apply();
new MutationObserver(function () {
clearTimeout(window.__jzArxRead);
window.__jzArxRead = setTimeout(apply, 400);
}).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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