支持搜索引擎的搜索结果快速预览。点击搜索结果旁的预览按钮，即可在速览窗中快速查看目标网站所含图片、链接、标题大纲、文本。
// ==UserScript==
// @name 💡WebPreview - 信息直达
// @namespace https://ez118.github.io/
// @version 1.7.1
// @description 支持搜索引擎的搜索结果快速预览。点击搜索结果旁的预览按钮，即可在速览窗中快速查看目标网站所含图片、链接、标题大纲、文本。
// @author ZZY_WISU
// @match *://*/*
// @connect *
// @license GNU GPLv3
// @icon data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACMAAAAjCAYAAAAe2bNZAAAAAXNSR0IB2cksfwAAAAlwSFlzAAALEwAACxMBAJqcGAAAAKVJREFUeJztlskNwCAMBGkkbaa/9JMi8orEg8P2+tgHlngRZgfEkdbAuu7n/RvKguvIlMhooVaZ7fdZSy7OiRZS86OEzNzVgB46axauuiQiKUddEpYipA0IE0LuEnchBOgqg87OdXU8QGLG7khGyQxzqWQsIA8ZCESxgXtg9tglkOLSs4Bp3qeSl7tUhE6mD9T2hcqU/eXRy2j7jszZMxQyMzGU9QGdyuqQn9XecwAAAABJRU5ErkJggg==
// @run-at document-end
// @grant GM_xmlhttpRequest
// @grant GM_addStyle
// @grant window.onurlchange
// @require https://update.greasyfork.org/scripts/503290/1426017/ultra-slim-jquery.js
// @require https://unpkg.com/turndown@7.2.0/dist/turndown.js
// @require https://unpkg.com/marked@14.0.0/marked.min.js
// ==/UserScript==
const contentEleSelList = {
"blog.csdn.net": "#article_content",
"zhuanlan.zhihu.com": ".Post-RichTextContainer",
"jingyan.baidu.com": "#format-exp",
"www.bilibili.com": "#article-content",
"zhidao.baidu.com": "#qb-content",
"www.cnblogs.com": "#topics",
"www.sohu.com": "#mp-editor"
}; /* 储存特定网站内容优化数据（文章主体的父元素） */
const mediaPrevSupport = [
{
"site": "https://v.youku.com/v_show/*.html",
"player": "https://player.youku.com/embed/*",
"type": "video"
},
{
"site": "https://v.qq.com/x/page/*.html",
"player": "https://v.qq.com/txp/iframe/player.html?vid=*",
"type": "video"
},
{
"site": "https://www.bilibili.com/video/BV*/",
"player": "https://www.bilibili.com/blackboard/html5mobileplayer.html?bvid=*",
"type": "video"
},
{
"site": "https://www.bilibili.com/video/av*/",
"player": "https://www.bilibili.com/blackboard/html5mobileplayer.html?aid=*",
"type": "video"
},
{
"site": "https://www.youtube.com/watch?v=*",
"player": "https://www.youtube.com/embed/*",
"type": "video"
},
{
"site": "https://music.163.com/#/song?id=*",
"player": "https://music.163.com/outchain/player?type=2&id=*&auto=0&height=66",
"type": "music"
},
{
"site": "https://music.163.com/song?id=*",
"player": "https://music.163.com/outchain/player?type=2&id=*&auto=0&height=66",
"type": "music"
},
{
"site": "https://open.spotify.com/track/*",
"player": "https://open.spotify.com/embed/track/*",
"type": "music"
},
{
"site": "https://music.apple.com/cn/song/*",
"player": "https://embed.music.apple.com/cn/album/*",
"type": "music"
},
{
"site": "https://music.youtube.com/watch?v=*",
"player": "https://www.youtube.com/embed/*",
"type": "music"
}
]; /* 储存支持预览播放视频/预览试听音乐的网站及其嵌入播放器链接 */
function runAsync(url,send_type,data_ry) {
var p = new Promise((resolve, reject)=> {
GM_xmlhttpRequest({
method: send_type, url: url, headers: {"Content-Type": "application/x-www-form-urlencoded;charset=utf-8"}, data: data_ry,
onload: function(response){resolve(response.responseText);}, onerror: function(response){reject("[WebPrvw] 请求失败");}
});
});
return p;
}
function judgeMediaSupport(url){
var jflag = null;
mediaPrevSupport.forEach(function(item, index) {
if (url.includes(item.site.split("*")[0])) {
jflag = { "state": true, "data": item };
}
});
return jflag || { "state": false, "data": null };
}
function getOutline(markdown) {
/* 文章大纲提取 */
var lines = markdown.split('\n');
var titleElementArr = [];
var preTitleElement = null;
lines.forEach(line => {
const match = line.match(/^(#{1,6})\s+(.*)/);
if (match) {
var id = Math.random().toString(36).substr(2, 7);
var level = 1;
var tag = match[1].length;
var title = match[2];
if (preTitleElement != null) {
var tagPre = preTitleElement.tag;
var levelPre = preTitleElement.level;
if (tagPre > tag) { level = levelPre - (tagPre - tag); }
else if (tagPre < tag) { level = levelPre + 1; }
else { level = levelPre; }
}
if (title.trim().length > 0) {
var titleElement = {
tag: tag,
title: title,
level: level,
id: id
};
titleElementArr.push(titleElement);
preTitleElement = titleElement;
}
}
});
return titleElementArr;
}
function getWebContents(txt) {
var links = [];
var images = [];
var content = "";
var outline = [];
/* 获取所有链接 */
txt.replace(/<a [^>]*href=['"]([^'"]+)['"][^>]*>/g, function(match, capture){
links.push(capture);
});
/* 获取所有图片 */
txt.replace(/<img [^>]*src=['"]([^'"]+)['"][^>]*>/g, function(match, capture){
images.push(capture);
});
/* 去掉影响转换的标签 */
var markdown = txt.replace(/<script.*?>.*?<\/script>/gis, "")
.replace(/<style.*?>.*?<\/style>/gis, "")
.replace(/<nav.*?>.*?<\/nav>/gis, "");
/* html转markdown */
const turndownService = new TurndownService();
markdown = turndownService.turndown(markdown);
/* markdown转html */
content = marked.parse(markdown);
/* 获取大纲信息 */
try{ outline = getOutline(markdown);}
catch{ console.log("[WebPrvw] 无法解析大纲") }
var final_data = {"link": links, "image": images, "content": content, "outline": outline};
return final_data;
}
function openReader(url) {
/* 打开阅读器 */
/* 阅读器加载提示 */
var closeBtn = $("#userscript-closeBtn");
var previewReader = $("#userscript-webPreviewReader");
previewReader.html("<p style='font-size:22px;margin-top:33%;' align='center'>正在载入...<br/><span>" + url + "</span></p>");
previewReader.show();
closeBtn.show();
/* 判断当前链接是支持预览的视频网站，并作出对应处理 */
var showMedia = judgeMediaSupport(url);
if(showMedia.state){
/* 被支持的视频网站的处理 */
var origUrl = url;
var frameUrl = "";
var mediaType = (showMedia.data.type == "video") ? "视频" : "音乐";
url = url.replace(showMedia.data.site.split("*")[0], "");
url = url + "?#";
url = url.split("#")[0].split("?")[0];
url = url.replace(showMedia.data.site.split("*")[1], "");
frameUrl = showMedia.data.player.replace("*", url);
previewReader.html(`
<div id="FadeInContainer" style="display:none;">
<div style="height:48px; overflow:hidden;">
<p style="margin:16px 10px; font-size:medium; ">` + mediaType + `预览</p>
</div>
<iframe id="videoFrame" style="min-height:300px;" src="` + frameUrl + `"></iframe>
<br>
<a href="` + origUrl + `" class="link" id="GoToLink" target="_blank">在原网站中继续 ▶ </a><br/>
<a href="` + frameUrl + `" class="link" id="GoToLink" target="_blank">在播放器中继续 ▶ </a>
</div>
`);
$("#FadeInContainer").show();
} else {
/* 普通网站的处理 */
runAsync(url, "GET", "").then((result)=>{ return result; }).then(function(result){
/* 源数据处理（csdn存在利用img的onerror属性注入xss脚本的行为） */
result = result.replace(/<img\s+[^>]*src\s*=\s*["']{2}[^>]*>/gi, ''); /* 删除src为空的标签 */
result = result.replace(/<img([^>]*)onerror\s*=\s*(['"]?[^'">]*['"]?)([^>]*)>/gi, '<img$1$3>'); /* 删除所有img标签的onerror属性 */
/* 对指定网站进行内容过滤，指定元素获取 */
let orig_result_backup = result;
const domain = url.split("/")[2];
if (contentEleSelList[domain]) {
try {
const selector = contentEleSelList[domain];
result = $(result).find(selector).html();
} catch (e) { console.log("[WebPrvw] 无法对特定网站进行内容优化") }
}
if (!result) { result = orig_result_backup; }
/* 调用解析网页 */
let reslist = getWebContents(result);
let linkhtml = "", imghtml = "", outlinehtml = "";
/* 处理链接列表 */
reslist.link.forEach(link_tmp => {
if(link_tmp.includes("//")){
linkhtml += "<a class='link' target='_blank' href='" + link_tmp + "'> 🔗 " + link_tmp + " </a><br>";
}
});
/* 处理图片列表 */
reslist.image.forEach(image => {
imghtml += "<a href='" + image + "' target='_blank'><img class='image' src='" + image + "' onerror='this.remove()'/></a>";
});
/* 处理大纲 */
reslist.outline.forEach(outlineItem => {
let space = "";
for(let j = 1; j < outlineItem.level; j++){
space += "  ";
}
outlinehtml += space + "+ " + outlineItem.title + "<br/>";
});
/* 将所有结果添加进阅读器，并显示 */
previewReader.html(`
<div id="FadeInContainer" style="display:none;">
<div style="height:48px;"></div>
<div class="ImageList" style="max-height:103px;">
<p class='ShowList' align='right' style='' onclick='this.parentNode.setAttribute("style", "");'>展开</p>
` + imghtml + `
</div>
<div class="LinkList" style="max-height:286px;">
<p class='ShowList' align='right' style='' onclick='this.parentNode.setAttribute("style", "");'>展开</p>
` + linkhtml + `
</div>
<div class="OutlineShow">
<b>大纲: </b><br/>
` + outlinehtml + `
</div>
<div class="ContentShow">
<b>文本: </b><br/>
` + reslist.content + `
</div>
</div>
`);
/* 隐藏不存在的项 */
if(reslist.image.length == 0) { $(".ImageList").hide(); }
if(reslist.link.length == 0) { $(".LinkList").hide(); }
if(reslist.outline.length == 0) { $(".OutlineShow").hide(); }
$("#FadeInContainer").show();
});
}
/* 执行结束 */
}
/* ======[ 搜索结果分析 ]===== */
/*
* 自动判断当前元素下是否 具有搜索结果特征
* 解释：判断一个父元素下存在 大于等于5个的 具有相同class的 子元素。
* 该函数用于统计当前元素的子元素的各个class的数量，若其中存在一个class的数量大于5次，则判断为搜索结果
*/
function checkSearchResults(parentElement) {
var classList = [];
var countList = [];
for(let i = 0; i < parentElement.children.length; i ++) {
var child = parentElement.children[i];
var childClass = child.classList;
for(let j = 0; j < childClass.length; j ++) {
if(classList.indexOf(childClass[j]) !== -1) {
/* 对列表中的class出现次数进行计数 */
var p = classList.indexOf(childClass[j]);
countList[p] += 1;
} else {
/* 对列表中未出现的class，插入列表 */
classList.push(childClass[j]);
countList.push(0);
}
}
}
var countMax = Math.max.apply(null, countList);
return (countMax >= 5);
}
/* 遍历元素 */
function traverseElements(element, callback) {
if (!element || !element.children || element.children.length === 0) { return; }
var returnCode = callback(element);
if (returnCode) { return; }
/* 如果返回值为true，则代表该元素已包含搜索结果，无需继续遍历 */
for (let i = 0; i < element.children.length; i++) {
traverseElements(element.children[i], callback);
}
}
/*
* 运用上述的 遍历函数 和 分析判断函数 实现在满足要求的搜索结果旁插入“速览按钮”
* 解释：遍历DOM，获取搜索列表，插入按钮
* 该函数是全程序 分析部分 的起始
*/
function initAnalyze() {
traverseElements(document.body, function(element) {
var status = checkSearchResults(element);
if(status) {
console.log("[WebPrvw] 存在搜索结果：", status);
let resultItems = element.children;
for(let i = 0; i < resultItems.length; i ++) {
try {
let resultItemLink = resultItems[i].getElementsByTagName("a")[0].href;
let resultItemTitleEle = resultItems[i].getElementsByTagName("a")[0].parentNode;
let resultItemText = resultItems[i].getElementsByTagName("a")[0].innerText;
if(resultItemText.length <= 5 || !resultItemLink){ continue; }
if(resultItemLink.includes("javascript:") && resultItemLink[0] == "j") { continue; }
/* 向每一个搜索结果的标题部分添加按钮 */
let previewBtn = document.createElement("button");
previewBtn.setAttribute("class", "userscript-webPreviewBtn");
previewBtn.setAttribute("link-data", resultItemLink);
previewBtn.innerText = "预览";
resultItemTitleEle.appendChild(previewBtn);
previewBtn.addEventListener("click", function(evt){
let linkData = previewBtn.getAttribute("link-data");
openReader(linkData);
}, true);
} catch(e) {
//console.log("[ERROR] ELE(" + i + ") \n" + e);
}
}
return true;
} else {
return false;
}
});
}
/* =========================== */
function init(){
/* 初始化 */
/* 插入样式 */
GM_addStyle(`
:root{--bg-color:#FFFFFFAA;--text-color:#386a1f;--border-color:#285a0f;--hover-bg-color:#edf1e5;--active-bg-color:#d7e1cd;--close-btn-bg:#386a1f;--close-btn-text:#FFF;--reader-bg:#fdfdf6;--reader-text-color:#131f0d;--link-color:#386a1f;--link-hover:#487631;--pre-bg-color:#eeeee8;--pre-border-color:#dee5d8;--code-bg-color:#e2e3dd}
@media (prefers-color-scheme:dark){:root{--bg-color:#00390a55;--text-color:#7edb7b;--border-color:#7edb7b;--hover-bg-color:#00390aAA;--active-bg-color:#7edb7b;--close-btn-bg:#7edb7b;--close-btn-text:#00390a;--reader-bg:#1a1c19;--reader-text-color:#e2e3dd;--link-color:#7edb7b;--link-hover:#76cd74;--pre-bg-color:#1e201d;--pre-border-color:#424940;--code-bg-color:#42494047}}
.userscript-webPreviewBtn{user-select:none;background:var(--bg-color);color:var(--text-color);padding:1px 8px;font-size:12px;font-weight:normal;height:fit-content;margin-left:5px;border-radius:16px;border:1px solid var(--border-color);cursor:pointer}
.userscript-webPreviewBtn:hover{background:var(--hover-bg-color)}
.userscript-webPreviewBtn:active{background:var(--active-bg-color);color:var(--close-btn-text)}
.userscript-webPreviewBtn img{height:16px}
.userscript-closeBtn{position:fixed;top:calc(8% + 5px);right:26px;z-index:100000;background:var(--close-btn-bg);color:var(--close-btn-text);padding:8px 20px;margin:6px;border-radius:30px;font-weight:bold;border:0;border-bottom:1px solid var(--border-color);cursor:pointer}
.userscript-closeBtn:hover{background:var(--link-hover)}
.userscript-webPreviewReader{font-size:medium;text-align:left;position:fixed;top:8vh;right:10px;bottom:0px;z-index:99999;width:35%;height:calc(100vh - 8%);min-width:340px;background:var(--reader-bg);color:var(--reader-text-color);overflow:hidden;box-shadow:0 0 0 1px rgba(0,0,0,.1),0 2px 4px 1px rgba(0,0,0,.18);border-radius:28px 28px 0px 0px}
.userscript-webPreviewReader .ShowList{margin:0;padding:0;width:100%;cursor:pointer;color:var(--link-color);user-select:none}
.userscript-webPreviewReader .image{height:85px;margin-bottom:8px;margin-right:5px;border-radius:15px;object-fit:contain;max-width:calc(100% - 20px)}
.userscript-webPreviewReader .link{text-decoration:none;color:var(--link-color) !important;margin-left:5px}
.userscript-webPreviewReader .link:hover{text-decoration:underline}
.ImageList,.LinkList,.OutlineShow,.ContentShow{padding:16px;margin:8px;background:var(--code-bg-color);border-radius:30px;overflow:hidden;color:var(--reader-text-color);box-shadow:0 .5px 1.5px 0 rgba(0,0,0,.19),0 0 1px 0 rgba(0,0,0,.039)}
.ContentShow img{max-width:92% !important;max-height:85vh !important;position:relative !important;top:0 !important;left:0 !important;border-radius:10px}
.ContentShow a{color:var(--link-color);text-decoration:underline 1px solid var(--link-hover);margin:0px 3px}
.ContentShow code{font-family:Consolas,Courier,Courier New,monospace}
.ContentShow pre{color:var(--reader-text-color);background:var(--pre-bg-color);width:90%;padding:5px;margin:5px 0px;overflow-y:auto;height:fit-content;border:1px solid var(--pre-border-color);border-radius:5px}
.ContentShow code:not(pre code){color:var(--reader-text-color);background:var(--code-bg-color);border-radius:0.25rem;padding:.125rem .375rem;line-height:1.75;word-wrap:break-word;border:1px solid var(--pre-border-color)}
.userscript-webPreviewReader #videoFrame{width:calc(100% - 10px);height:calc(100% - 120px);background:var(--code-bg-color);border:none;border-radius:30px;margin:5px 5px;box-shadow:0 .5px 1.5px 0 rgba(0,0,0,.19),0 0 1px 0 rgba(0,0,0,.039)}
.userscript-webPreviewReader #FadeInContainer{overflow-y:scroll;overflow-x:hidden;border-radius:15px 15px 0px 0px;width:100%;height:100%}
`);
/* 页面加载时插入DOM */
/* 阅读器 */
if( $("#userscript-webPreviewReader").length == 0 ){
var $previewReader = $('<div>', {
class: 'userscript-webPreviewReader',
id: 'userscript-webPreviewReader'
}).appendTo('body');
var $closeBtn = $('<button>', {
text: '关闭',
class: 'userscript-closeBtn',
id: 'userscript-closeBtn',
}).appendTo('body');
$closeBtn.on('click', function() {
$previewReader.hide();
$closeBtn.hide();
});
}
/* 隐藏阅读器 */
$("#userscript-webPreviewReader").hide();
$("#userscript-closeBtn").hide();
/* 自动匹配搜索结果并插入按钮 */
initAnalyze();
return;
}
(function() {
'use strict';
init();
window.addEventListener('urlchange', (info) => {
if($("#userscript-webPreviewReader").length > 0 && $(".userscript-webPreviewBtn").length > 1) { return; }
setTimeout(function(){
init();
}, 1600)
});
})();