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B站笔记快捷键←↓→

在B站笔记中：打开笔记快捷键：Ctrl+Shift+↑，关闭笔记快捷键：Ctrl+Shift+↓，笔记窗口切换到视频窗口：Ctrl+Shift+←，视频窗口切换到笔记窗口：Ctrl+Shift+→，截图+时间戳快捷键：Ctrl+↓，时间戳+截图快捷键：Ctrl+↑，时间戳快捷键：Ctrl+←，截图快捷键：Ctrl+→，下载视频笔记Ctrl+Shift+S

当前为 2022-12-27 提交的版本，查看 最新版本。

// ==UserScript==
// @name         B站笔记快捷键←↓→
// @namespace    https://space.bilibili.com/1208812226
// @version      2.6
// @description  在B站笔记中：打开笔记快捷键：Ctrl+Shift+↑，关闭笔记快捷键：Ctrl+Shift+↓，笔记窗口切换到视频窗口：Ctrl+Shift+←，视频窗口切换到笔记窗口：Ctrl+Shift+→，截图+时间戳快捷键：Ctrl+↓，时间戳+截图快捷键：Ctrl+↑，时间戳快捷键：Ctrl+←，截图快捷键：Ctrl+→，下载视频笔记Ctrl+Shift+S
// @author       大王鹅鹅鹅
// @match        http*://www.bilibili.com/video/*
// @match        https://www.bilibili.com/medialist/*
// @icon         https://static.hdslb.com/images/favicon.ico
// @grant        none
// @license      AGPL License
// ==/UserScript==

(function () {
    "use strict";
    // JS监听键盘快捷键事件
    document.addEventListener("keydown", function (event) {
      if (event.shiftKey && event.keyCode == 38) {//打开笔记——快捷键：Ctrl+Shift+↑
        if (event.ctrlKey) {
          document.querySelector("div.note-btn.note-btn__blue").click();
          document
            .querySelector(".operation-desc")
            .click();
          var count = 2;
          var timeId = setInterval(function () {
            count--;
            if (count <= 0) {
              clearInterval(timeId);
            }
            initFocusDown();
              

          }, 600);
        }
      }

      if (event.shiftKey && event.keyCode == 40) {//关闭笔记——快捷键：Ctrl+Shift+↓
        if (event.ctrlKey) {
          document
            .querySelector(".close-note")
            .click();
        }
      }

      if (event.shiftKey && event.keyCode == 37) {//回到视频——快捷键：Ctrl+Shift+←
        if (event.ctrlKey) {
          var pNodel = document.querySelector(
            "div.editor-innter.ql-container.ql-snow > div.ql-editor"
          );
          pNodel.blur();
        }
      }
      if (event.shiftKey && event.keyCode == 39) {//回到笔记——快捷键：Ctrl+Shift+→
        if (event.ctrlKey) {
          var el = document.querySelector(
            "div.editor-innter.ql-container.ql-snow > div.ql-editor"
          );
          var scrollHeight = el.scrollHeight;
          el.scrollTo(0, scrollHeight);
          el.focus();
          if (
            typeof window.getSelection != "undefined" &&
            typeof document.createRange != "undefined"
          ) {
            var range = document.createRange();
            range.selectNodeContents(el);
            range.collapse(false);
            var sel = window.getSelection();
            sel.removeAllRanges();
            sel.addRange(range);
          } else if (typeof document.body.createTextRange != "undefined") {
            var textRange = document.body.createTextRange();
            textRange.moveToElementText(el);
            textRange.collapse(false);
            textRange.select();
          }
        }
      }

      if (event.ctrlKey && event.keyCode == 37) {//时间戳——快捷键：Ctrl+←
        if (!event.shiftKey) {
          document.querySelector("i.bili-note-iconfont.iconicon_flag_L").click();
          setTimeout(function () {
            document
              .querySelector(
                "div.dialog-btn.tag-dialog__btn--confirm:nth-child(2)"
              )
              .click();
          }, 5 * 100);
        }
      }

      if (event.ctrlKey && event.keyCode == 38) {//时间戳+截图——快捷键：Ctrl+↑
        if (!event.shiftKey) {
            imageAfterTime();
        }
      }

      if (event.ctrlKey && event.keyCode == 39) {//截图——快捷键：Ctrl+→
        if (!event.shiftKey) {
          document.querySelector("i.bili-note-iconfont.iconcapture-app").click();
          setTimeout(function () {
            var parentNode = document.querySelector(
              "div.editor-innter.ql-container.ql-snow > div.ql-editor"
            );
            var scrollHeight = parentNode.scrollHeight;
            parentNode.scrollTo(0, scrollHeight);
            parentNode.focus();
          }, 500);
        }
      }

      if (event.ctrlKey && event.keyCode == 40) {//截图+时间戳——快捷键：Ctrl+↓
        if (!event.shiftKey) {
         timeAfterImage();
        }
      }

     if (event.shiftKey && event.keyCode == 83) {//下载笔记为markdown格式——快捷键：Ctrl+Shift+S
        if (event.ctrlKey) {
          openNote();
        }
      }

    });



    function initFocusDown() {
      document.querySelector("div.note-btn.note-btn__blue:nth-child(2)").click();
      document.querySelector("div.note-list-footer > div.note-list-btn").click();
      var el = document.querySelector(
        "div.editor-innter.ql-container.ql-snow > div.ql-editor"
      );
      var scrollHeight = el.scrollHeight;
      el.scrollTo(0, scrollHeight);
      el.focus();
      if (
        typeof window.getSelection != "undefined" &&
        typeof document.createRange != "undefined"
      ) {
        var range = document.createRange();
        range.selectNodeContents(el);
        range.collapse(false);
        var sel = window.getSelection();
        sel.removeAllRanges();
        sel.addRange(range);
      } else if (typeof document.body.createTextRange != "undefined") {
        var textRange = document.body.createTextRange();
        textRange.moveToElementText(el);
        textRange.collapse(false);
        textRange.select();
      }
    }

    function openNote() {
      const editor = document.querySelector(".ql-editor")
        ? document.querySelector(".ql-editor")
        : null;
        if(!editor){alert("请先打开视频笔记，快捷键：Ctrl+Shift+↑");return;}
      const isBlank = editor && !editor.classList.contains("ql-blank");

      if (isBlank) {
        const noteContent = getNoteContent(editor);
        downloadMD(noteContent);
      } else {
        alert("笔记为空，无法下载");
      }
    }

    function getNoteContent(editor) {
      if (
        editor.nodeType === 1 &&
        editor.childNodes &&
        editor.childNodes.length > 0
      ) {
        return getNodes2Array(editor.childNodes);
      }
      return "";
    }

    function getNodes2Array(nodes) {
      const contents = [];
      for (let i = 0; i < nodes.length; i++) {
        const node = nodes[i];
        if (node.nodeType == 1) {
          if (node.nodeName == "P") {
            contents.push(node2string(node));
          } else if (node.nodeName == "OL" || node.nodeName == "UL") {
            contents.push(getLiContent(node));
          } else if (node.nodeName == "DIV") {
            contents.push(divImgContent(node));
          } else {
            contents.push(node.textContent);
          }
        }
      }
      return contents;
    }

    function getLiContent(node) {
      let allLiContent = "";
      let nodeName = node.nodeName;
      let liNodes = node.childNodes;
      let indentLevels = {};

      if (liNodes && liNodes.length > 0) {
        for (let li of liNodes) {
          let liclass = li.getAttribute("class");
          let indentLevel = 0;
          if (liclass) {
            let match = liclass.match(/ql-indent-(\d+)/);
            if (match) {
              indentLevel = parseInt(match[1]);
            }
          }

          indentLevels[indentLevel] = (indentLevels[indentLevel] || 0) + 1;

          let indent = "";
          for (let i = 0; i < indentLevel; i++) {
            indent += "\t";
          }

          allLiContent +=
            indent +
            (nodeName == "OL" ? indentLevels[indentLevel] + ". " : "- ") +
            node2string(li) +
            "\n";
        }
      }

      return allLiContent;
    }

    function divImgContent(node) {
      if (!node.classList || !node.classList.contains("ql-image-preview")) {
        return;
      }

      let img = node.querySelector("img");
      let src = img ? "https:" + img.getAttribute("src") : "";
      if (!src.includes("http")) {
        return;
      }

      let content = src ? src : "";
      if (!content.match(/api.bilibili.com\/x\/note\/image/g)) {
        content = "![](" + content + ")";
      }
      return content;
    }

    function node2string(node) {
      let nodes = node.childNodes;
      if (!nodes || nodes.length <= 0) return "";
      let line = "";

      for (let i = 0; i < nodes.length; i++) {
        let child = nodes[i];
        let tag = child.nodeName;
        let myContents = "";

        if (
          (child.classList && child.classList.contains("ql-tag-blot")) ||
          tag === "DIV"
        ) {
          //时间戳
          let timeText = child.querySelector(".time-tag-item__text");
          let desc = child.querySelector(".time-tag-item__desc");
          let p = child.getAttribute("data-index");
          let second = child.getAttribute("data-seconds");
          let pUrl = window.location.href;
          let match = pUrl.match(
            /(https\:\/\/www.bilibili.com\/video\/)(BV|av)[a-zA-Z0-9]+(?=[\/\?])?/g
          );
          pUrl = match ? match[0] : pUrl;

          let title =
            "🚩" +
            timeText.firstChild.textContent +
            (desc ? " " + desc.textContent : "");
          let time = `${pUrl}?p=${p}&t=${second}`;

          myContents += `[${title}](${time})`;
        } else {
          if (!child.children || child.children.length == 0) {
            myContents += child.textContent;
          } else {
            myContents += node2string(child);
          }

          //针对文字ql-bg
          let className = "";
          if (child.classList) {
            let myClassList = child.classList;
            for (let a = 0; a < myClassList.length; a++) {
              if (myClassList[a].match(/ql-bg/)) {
                className += "background-color:" + myClassList[a].slice(-7) + ";";
              }
              if (myClassList[a].match(/ql-color/)) {
                className += "color:" + myClassList[a].slice(-7) + ";";
              }
              if (myClassList[a].match(/ql-size/)) {
                className +=
                  "font-size:" +
                  myClassList[a].slice(8, myClassList[a].length) +
                  ";";
              }
            }
          }

          let font1 = className != "" ? "<font style='" + className + "'>" : "";
          let font2 = className != "" ? "</font>" : "";
          myContents = font1 + myContents + font2;

          if (tag == "U" || tag == "S" || tag == "STRONG") {
            myContents =
              "<" +
              tag.toLowerCase() +
              ">" +
              myContents +
              "</" +
              tag.toLowerCase() +
              ">";
          } else if (tag == "BR") {
            myContents += "\n";
          } else {
            myContents += "";
          }
        }
        line += myContents;
      }
      return line;
    }
      function getNowTime(){
          var now = new Date();
          var year = now.getFullYear();
          var month = now.getMonth() + 1;
          var date = now.getDate();
          var hours = now.getHours();
          var minutes = now.getMinutes();
          var seconds = now.getSeconds();
          hours = hours < 10 ? '0' + hours : hours;
          minutes = minutes < 10 ? '0' + minutes : minutes;
          seconds = seconds < 10 ? '0' + seconds : seconds;

          var dateString = year + "-" + month + "-" + date + " " + hours + ":" + minutes + ":" + seconds;
          return dateString;
      }

      function getInfo(){
          let allContent ="";
          try{
              const username = document.querySelector(".username").firstChild.textContent.trim();
              const pudate_text = document.querySelector(".pudate-text").firstChild.textContent.trim();
              const views = document.querySelector("span.view.item").getAttribute("title");
              let pUrl = window.location.href;
              let match = pUrl.match(/(https\:\/\/www.bilibili.com\/video\/)(BV|av)[a-zA-Z0-9]+(?=[\/\?])?/g);
              pUrl = match ? match[0] : pUrl;
              allContent = "---\ntags: bilibili_note\nurl: "+pUrl+"\nup: "+username+"\nup_date: "+pudate_text+"\ndown_time: "+getNowTime()+"\nviews: "+views+"\n---\n\n";
          }catch(e){
              let pUrl = window.location.href;
              let match = pUrl.match(/(https\:\/\/www.bilibili.com\/video\/)(BV|av)[a-zA-Z0-9]+(?=[\/\?])?/g);
              pUrl = match ? match[0] : pUrl;
              allContent = "---\ntags: bilibili_note\nurl: "+pUrl+"\ndown_time: "+getNowTime()+"\n---\n\n";
          }
      return allContent;
      }

    function downloadMD(notes) {
      let allContent =getInfo();
      let bid = window.location.href.match(
        /(?<=bilibili.com\/video\/)(BV|av)[a-zA-Z0-9]+(?=[\/\?])?/g
      );

      for (var i = 0; i < notes.length; i++) {
        if (notes[i] != "") {
          let images_id = notes[i].match(
            /(?<=api.bilibili.com\/x\/note\/image\?image_id=)\d{6}/g
          );
          if (images_id) {
            allContent +=
              "![](" + bid[0] + "_" + images_id[0] + ".jpg)" + "\n";
            //下载图片
            downloadImages(notes[i], bid[0]);
          } else {
            allContent += notes[i] + "\n";
          }
        } else {
          allContent += "\n";
        }
      }
      //下载md
      let video_title = document.querySelector(".video-title");
      let v_title = video_title ? video_title.textContent : new Date().getTime();
      setTimeout(function () {
        downloadFiles("bilibili_" + v_title + ".md", allContent);
      }, 1000);
    }

    async function downloadImages(src, bid) {
      let res = await fetch(src, {
        method: "get",
        credentials: src.includes("bilibili.com") ? "include" : "omit",
      });

      if (!res.ok) return;

      let blob = await res.blob();
      let fileName = src.slice(-6);
      downloadFiles(bid + "_" + fileName + ".jpg", blob);
    }


    function downloadFiles(fileName, myblob) {
      let blob = new Blob([myblob]);
      let a = document.createElement("a");
      a.href = URL.createObjectURL(blob);
      a.download = fileName;
      document.body.appendChild(a);
      a.click();
      document.body.removeChild(a);
    }


     function imageAfterTime() {//时间戳+截图 ↑
          new Promise((resolve,reject)=>{
                  document.querySelector('i.bili-note-iconfont.iconicon_flag_L').click();
                  return resolve();
              }).then(()=>{
                  setTimeout( function(){
                      document.querySelector('div.dialog-btn.tag-dialog__btn--confirm:nth-child(2)').click();
                  },500);
              });

              new Promise((resolve,reject)=>{
                   setTimeout( function(){
                      document.querySelector('i.bili-note-iconfont.iconcapture-app').click();
                  },1000);
                  return resolve();
              }).then(()=>{
                  setTimeout( function(){
                   var parentNode=document.querySelector('div.editor-innter.ql-container.ql-snow > div.ql-editor');
                   var childN=parentNode.childNodes;
                   var scrollHeight =parentNode.scrollHeight;
                   parentNode.scrollTo(0,scrollHeight);
                   parentNode.focus();
                      for(var i=1;childN.length-1;i++){
                              if(childN[i].innerHTML=="<br>" && childN[i].previousSibling.innerHTML!="<br>" && childN[i].previousSibling.nodeName == "P" && childN[i].nextSibling.nodeName == "DIV"){
                                  childN[i].remove();
                              }

                      }

                },1100);
              });

      }

      function timeAfterImage(){//截图+时间 ↓
            document.querySelector('i.bili-note-iconfont.iconcapture-app').click();
              new Promise((resolve,reject)=>{
                  document.querySelector('i.bili-note-iconfont.iconicon_flag_L').click();
                  return resolve();
              }).then(()=>{
                  setTimeout( function(){
                      document.querySelector('div.dialog-btn.tag-dialog__btn--confirm:nth-child(2)').click();
                      var parentNode=document.querySelector('div.editor-innter.ql-container.ql-snow > div.ql-editor');
                      var childN=parentNode.childNodes;
                      for(var i=0;childN.length;i++){
                          if(childN[i].innerHTML=="<br>" && childN[i].nextSibling.innerHTML!="<br>" && childN[i].nextSibling.nodeName == "P" && childN[i].previousSibling.nodeName == "DIV"){
                             childN[i].remove();
                          }
                      }
                  },1500);
              });

      }


       function toEnd(el) {
           var scrollHeight = el.scrollHeight;
           el.scrollTo(0, scrollHeight);
           el.focus();
           if (typeof window.getSelection != "undefined" && typeof document.createRange != "undefined") {
               var range = document.createRange();
               range.selectNodeContents(el);
               range.collapse(false);
               var sel = window.getSelection();
               sel.removeAllRanges();
               sel.addRange(range);
           } else if (typeof document.body.createTextRange != "undefined") {
               var textRange = document.body.createTextRange();
               textRange.moveToElementText(el);
               textRange.collapse(false);
               textRange.select();
           }
       }




  })();

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