BiliBili B站一键开关弹幕 / HotKey to flip DanMu

通过 “/” 键控制弹幕开关，也可通过更改 ”danmu“ 变量来修改热键
当前为 2021-11-10 提交的版本，查看最新版本。
换行
// ==UserScript==
// @name         BiliBili B站 一键开关弹幕 / HotKey to flip DanMu
// @namespace    http://tampermonkey.net/
// @version      v0.2
// @description  通过 “/” 键控制弹幕开关，也可通过更改 ”danmu“ 变量 来修改热键
// @author       Ben
// @match        *://*.bilibili.com/*
// @grant        none
// @require https://cdn.staticfile.org/jquery/2.1.4/jquery.min.js
// ==/UserScript==

// code reference : https://github.com/akiirui/userscript/blob/bilibili-danmaku-disabler/userscript.js

var danMu = 191; //"/"，可以自己更改

const SELECTOR_NATIVE = {
  on: "input:checked[class='bui-switch-input']",
  off: "input:not(:checked)[class='bui-switch-input']",
};

const SELECTOR_EMBED = {
  on: "div[class~='bilibili-player-video-btn-danmaku'][data-text='打开弹幕']",
  off: "div[class~='bilibili-player-video-btn-danmaku'][data-text='关闭弹幕']",
};

const IS_EMBED = document.location.hostname === "player.bilibili.com";
const SELECTOR = IS_EMBED ? SELECTOR_EMBED : SELECTOR_NATIVE;

// Skip Charge Support
function skipCharge() {
  const skip = () => {
    document
      .getElementsByClassName("bilibili-player-video-btn-next")[0]
      .click();
  };

  const videoElementA = document.querySelector("video");
  const videoElementB = document.querySelector("bwp-video");

  if (videoElementA) {
    videoElementA.onended = skip;
  } else if (videoElementB) {
    videoElementB.onended = skip;
  }
}

// Disable danmaku
function disableDanmaku() {
  const button = document.querySelector(SELECTOR.on);

  if (button) {
    //document.querySelector(".bui-switch-input").click();
    button.click();
    skipCharge();
  }

  if (!document.querySelector(SELECTOR.off)) {
    setTimeout(disableDanmaku, 500);
  }
}

function enableDanmaku() {
  const button = document.querySelector(SELECTOR.off);

  if (button) {
    button.click();
    skipCharge();
  }

  if (!document.querySelector(SELECTOR.on)) {
    setTimeout(enableDanmaku, 500);
  }
}

// Disable danmaku with PJAX detector
function disableDanmakuPJAX() {
  const obServer = new MutationObserver(disableDanmaku);
  const obTarget = document.getElementById("bilibili-player");
  const obOption = { childList: true };

  disableDanmaku();
  obServer.observe(obTarget, obOption);
}

function enableDanmakuPJAX() {
  const obServer = new MutationObserver(enableDanmaku);
  const obTarget = document.getElementById("bilibili-player");
  const obOption = { childList: true };

  enableDanmaku();
  obServer.observe(obTarget, obOption);
}

// Redirect `bilibili.com/s/video/*` to `bilibili.com/video/*`
if (location.href.includes("/s/video/")) {
  location.replace(location.href.replace("/s/video/", "/video/"));
}


$(document).ready(function() {
		$(document).keydown(function(event){     //调用键盘编码，按了键盘回调keydown里的function(event)函数，event就是你按的那个按键的code码
            switch(event.keyCode){
                case danMu:
                    if( $(".bui-switch-input").is(':checked') ){
                        // Run disabler
                        IS_EMBED ? disableDanmaku() : disableDanmakuPJAX();

                    }else{
                        IS_EMBED ? enableDanmaku() : enableDanmakuPJAX();

                    }
                break;
            }
		});
});