将选中文字添加到网页标题最前面，以便在浏览器标签栏快速识别
// ==UserScript==
// @name 网页标题笔记
// @version 0.1.0.1
// @icon https://tampermonkey.net/favicon.ico
// @description 将选中文字添加到网页标题最前面，以便在浏览器标签栏快速识别
// @author You!
// @grant unsafeWindow
// @include *
// @run-at document-start
// @namespace https://greasyfork.org/zh-CN/scripts/369580-网页标题笔记
// ==/UserScript==
(function() {
document.addEventListener('keydown', function() {
if (192 !== event.keyCode) return;
if (event.ctrlKey && !event.altKey && !event.shiftKey) setTitleNote(); //替换添加：Ctrl
else if (!event.ctrlKey && event.altKey && !event.shiftKey) setTitleNote(true); //正向添加：Alt
else if (event.ctrlKey && event.altKey && !event.shiftKey) setTitleNote(false); //反向添加：Ctrl + Alt
else if (event.ctrlKey && !event.altKey && event.shiftKey) clearTitleNote(); //清除笔记：Ctrl + Shift
function getSelectionTxt() {
var txt = unsafeWindow.getSelection().toString().trim();
return txt.length ? txt : null;
}
function getNote(txt, append) {
if ('boolean' !== typeof append) {
unsafeWindow.txts = [txt];
return txt;
} else {
if (undefined === unsafeWindow.txts) unsafeWindow.txts = [];
if (append) unsafeWindow.txts.push(txt);
else unsafeWindow.txts.unshift(txt);
}
return unsafeWindow.txts.join('|');
}
function getOriginalTitle() {
if (undefined === unsafeWindow.title0) unsafeWindow.title0 = document.title;
return unsafeWindow.title0;
}
function setTitleNote(append) {
var txt = getSelectionTxt();
if (!txt) return;
document.title = getNote(txt, append) + '▶' + getOriginalTitle();
}
function clearTitleNote() {
if (undefined !== unsafeWindow.title0) document.title = unsafeWindow.title0;
delete unsafeWindow.txts;
}
});
}());