BiliBackToBeginning

打开视频时默认回到视频开头处
当前为 2025-04-23 提交的版本，查看最新版本。
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// ==UserScript==
// @name         BiliBackToBeginning
// @namespace    https://github.com/ImQQiaoO/BiliBackToBeginning
// @version      v0.1.0
// @description  打开视频时默认回到视频开头处
// @author       ImQQiaoO
// @match        *://*.bilibili.com/*
// @exclude      *://message.bilibili.com/pages/nav/header_sync
// @exclude      *://message.bilibili.com/pages/nav/index_new_pc_sync
// @exclude      *://data.bilibili.com/*
// @exclude      *://cm.bilibili.com/*
// @exclude      *://link.bilibili.com/*
// @exclude      *://passport.bilibili.com/*
// @exclude      *://api.bilibili.com/*
// @exclude      *://api.*.bilibili.com/*
// @exclude      *://*.chat.bilibili.com/*
// @exclude      *://member.bilibili.com/*
// @exclude      *://www.bilibili.com/tensou/*
// @exclude      *://www.bilibili.com/correspond/*
// @exclude      *://live.bilibili.com/p/html/*
// @exclude      *://live.bilibili.com/live-room-play-game-together
// @exclude      *://www.bilibili.com/blackboard/comment-detail.html*
// @exclude      *://www.bilibili.com/blackboard/newplayer.html*
// @license      MIT
// ==/UserScript==

(function() {
  "use strict";

  // 设置和获取 localStorage
  const STORAGE_KEY = "reset_bili_video_enabled";
  function setEnabled(flag) {
      localStorage.setItem(STORAGE_KEY, flag ? "1" : "0");
  }
  function getEnabled() {
      return localStorage.getItem(STORAGE_KEY) === "1";
  }

  // 创建设置面板
  function createSettingsPanel() {
      const style = `
          #biliResetPanel {
              position: fixed; bottom: 30px; right: 30px;
              z-index: 99999; background: #fff; color: #333;
              border: 1px solid #bbb; border-radius: 8px;
              box-shadow: 0 6px 16px rgba(0,0,0,.1);
              padding: 18px 26px 18px 18px; font-size: 16px;
              display: none; 
          }
          #biliResetPanel input[type=checkbox] { transform: scale(1.3); margin-right:8px;}
          #biliResetPanelClose { cursor:pointer;color: #f66; float:right; font-size: 18px;}
          #biliResetPanelBtn {
              position: fixed; bottom: 30px; right: 30px;
              z-index: 99998; background: #ffe2a0; color: #333;
              border: 1px solid #bbb; border-radius: 50%;
              width: 42px; height: 42px; text-align:center; line-height: 42px;
              font-size: 24px; cursor: pointer; box-shadow: 0 3px 12px rgba(0,0,0,.08);
          }
      `;
      const styleEl = document.createElement("style");
      styleEl.textContent = style;
      document.head.appendChild(styleEl);

      // 面板内容
      const panel = document.createElement("div");
      panel.id = "biliResetPanel";
      panel.innerHTML = `
          <span id="biliResetPanelClose" title="关闭设置面板">&times;</span>
          <label>
              <input type="checkbox" id="biliResetSwitch">
              启用自动重置进度到0秒
          </label>
      `;
      document.body.appendChild(panel);

      // 显示/隐藏按钮
      const btn = document.createElement("div");
      btn.id = "biliResetPanelBtn";
      btn.title = "打开【重置到0秒】设置";
      btn.textContent = "⚙";
      document.body.appendChild(btn);

      btn.onclick = () => {panel.style.display = "block";}
      document.getElementById("biliResetPanelClose").onclick = () => {panel.style.display = "none";}
      document.getElementById('biliResetSwitch').checked = getEnabled();
      document.getElementById('biliResetSwitch').onchange = (e) => {
          setEnabled(e.target.checked);
      };
  }

  // 主功能
  function checkBilibiliVideoResume() {
    const video = document.querySelector("video");
    if (video && getEnabled()) {
        video.currentTime = 0;
        video.play();
        console.log("[B站重置进度脚本] 已直接重置到开头！");
    }
}

  // 初始化
  createSettingsPanel();
  // B站是单页应用，需监听页面变化，多P切换也可检测
  function observeVideoLoad() {
      let lastHref = "";
      setInterval(()=>{
          if (location.href !== lastHref) {
              lastHref = location.href;
              setTimeout(checkBilibiliVideoResume, 50);
          }
      }, 100);
  }
  observeVideoLoad();
  // 首次进入的页面
  setTimeout(checkBilibiliVideoResume, 50);
})();
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