「最近つけたタグ強調JavaScript」は毎回RSSを取得していて、負荷的によくないかと思い、 30分キャッシュするようにしてみました。
// ==UserScript==
// @name Hanena Bookmark Tag Filter
// @namespace http://fuktommy.com/js/
// @description Accent recent userd tag at add entry page.
// @include http://b.hatena.ne.jp/add?mode=confirm&*
// ==/UserScript==
// Copyright (c) 2008 Satoshi Fukutomi <info@fuktommy.com>.
// http://fuktommy.com/js/hatebu_tagfilter.user.js
// Distributed under new BSD license
// http://fuktommy.com/bsdl
(function() {
function resizeTags(cloud) {
var tags = document.getElementById('tags_list').getElementsByTagName('span');
for (var i=tags.length-1; i>=0; i--) {
var tag = tags[i].innerHTML;
if (cloud[tag]) {
tags[i].style.fontSize = '20pt';
}
}
}
function loadTagsFromCache() {
var cloud = {};
var now = (new Date()).getTime() / 1000;
if (GM_getValue('cache_time', 0) + 1800*1000 < now) {
return false;
} else {
var cached = GM_getValue('tags', '');
var tags = cached.split('[]');
for (var i=tags.length-1; i>=0; i--) {
cloud[decodeURIComponent(tags[i])] = true;
}
resizeTags(cloud);
return true;
}
}
function loadTagsFromXML(xml) {
var cloud = {};
var cached = '';
var subjects = xml.getElementsByTagName('dc:subject');
if (subjects.length == 0) {
subjects = xml.getElementsByTagName('subject');
}
for (var i=subjects.length-1; i>0; i--) {
cloud[subjects[i].firstChild.nodeValue] = true;
cached += encodeURIComponent(subjects[i].firstChild.nodeValue) + '[]';
}
if (subjects.length > 0) {
cloud[subjects[0].firstChild.nodeValue] = true;
cached += encodeURIComponent(subjects[i].firstChild.nodeValue);
}
var now = Math.floor((new Date()).getTime() / 1000);
GM_setValue('cache_time', now);
GM_setValue('tags', cached);
var tags = document.getElementById('tags_list').getElementsByTagName('span');
for (var i=tags.length-1; i>=0; i--) {
var tag = tags[i].innerHTML;
if (cloud[tag]) {
tags[i].style.fontSize = '20pt';
}
}
}
function getUsername() {
var anchor = document.getElementsByTagName('a');
for (var i=anchor.length-1; i>=0; i--) {
if (anchor[i].className == 'username') {
return anchor[i].firstChild.nodeValue;
}
}
return null;
}
function readFeed() {
if (loadTagsFromCache()) {
return;
}
var username = getUsername();
if (! username) {
return;
}
var request = new XMLHttpRequest();
request.onreadystatechange = function () {
if ((request.readyState == 4) && (request.status == 200)) {
loadTagsFromXML(request.responseXML);
}
}
request.open('GET', 'http://b.hatena.ne.jp/' + username + '/rss', true);
request.send(null);
}
window.addEventListener('load', readFeed, false);
})();
Original Article: http://blog.fuktommy.com/1206024560