去除顶部遮挡

我算法不太行可能通用性不行，自测(简书，google,知乎)没问题
目前为 2020-05-19 提交的版本，查看最新版本。
换行
// modules are defined as an array
// [ module function, map of requires ]
//
// map of requires is short require name -> numeric require
//
// anything defined in a previous bundle is accessed via the
// orig method which is the require for previous bundles
parcelRequire = (function (modules, cache, entry, globalName) {
  // Save the require from previous bundle to this closure if any
  var previousRequire = typeof parcelRequire === 'function' && parcelRequire;
  var nodeRequire = typeof require === 'function' && require;

  function newRequire(name, jumped) {
    if (!cache[name]) {
      if (!modules[name]) {
        // if we cannot find the module within our internal map or
        // cache jump to the current global require ie. the last bundle
        // that was added to the page.
        var currentRequire = typeof parcelRequire === 'function' && parcelRequire;
        if (!jumped && currentRequire) {
          return currentRequire(name, true);
        }

        // If there are other bundles on this page the require from the
        // previous one is saved to 'previousRequire'. Repeat this as
        // many times as there are bundles until the module is found or
        // we exhaust the require chain.
        if (previousRequire) {
          return previousRequire(name, true);
        }

        // Try the node require function if it exists.
        if (nodeRequire && typeof name === 'string') {
          return nodeRequire(name);
        }

        var err = new Error('Cannot find module \'' + name + '\'');
        err.code = 'MODULE_NOT_FOUND';
        throw err;
      }

      localRequire.resolve = resolve;
      localRequire.cache = {};

      var module = cache[name] = new newRequire.Module(name);

      modules[name][0].call(module.exports, localRequire, module, module.exports, this);
    }

    return cache[name].exports;

    function localRequire(x){
      return newRequire(localRequire.resolve(x));
    }

    function resolve(x){
      return modules[name][1][x] || x;
    }
  }

  function Module(moduleName) {
    this.id = moduleName;
    this.bundle = newRequire;
    this.exports = {};
  }

  newRequire.isParcelRequire = true;
  newRequire.Module = Module;
  newRequire.modules = modules;
  newRequire.cache = cache;
  newRequire.parent = previousRequire;
  newRequire.register = function (id, exports) {
    modules[id] = [function (require, module) {
      module.exports = exports;
    }, {}];
  };

  var error;
  for (var i = 0; i < entry.length; i++) {
    try {
      newRequire(entry[i]);
    } catch (e) {
      // Save first error but execute all entries
      if (!error) {
        error = e;
      }
    }
  }

  if (entry.length) {
    // Expose entry point to Node, AMD or browser globals
    // Based on https://github.com/ForbesLindesay/umd/blob/master/template.js
    var mainExports = newRequire(entry[entry.length - 1]);

    // CommonJS
    if (typeof exports === "object" && typeof module !== "undefined") {
      module.exports = mainExports;

    // RequireJS
    } else if (typeof define === "function" && define.amd) {
     define(function () {
       return mainExports;
     });

    // <script>
    } else if (globalName) {
      this[globalName] = mainExports;
    }
  }

  // Override the current require with this new one
  parcelRequire = newRequire;

  if (error) {
    // throw error from earlier, _after updating parcelRequire_
    throw error;
  }

  return newRequire;
})({"../util/fun/防抖.ts":[function(require,module,exports) {
"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.debounce = void 0;

function debounce(fn, wait) {
  var timeout = null;
  return function (...arg) {
    if (timeout !== null) clearTimeout(timeout);
    timeout = setTimeout(() => {
      fn(...arg);
    }, wait);
  };
}

exports.debounce = debounce;
},{}],"../网页笔记/config.ts":[function(require,module,exports) {
"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.AllStoreName = exports.isDev = void 0;
/** 是不是开发环境 */

exports.isDev = false;
const config = {
  state: 0,

  /** 是否开启编辑 */
  //是开发环境自动开启
  elementEdit: exports.isDev,

  /** 服务器地址 */
  serverIp: 'https://shenzilong.cn/note/',

  /** 页面的url */
  locationUrl: decodeURIComponent(location.origin + location.pathname),

  /** 存储登录凭证的 */
  loginCredentials: 'loginCredentials'
};
/** 存储命令栈的地方 */

exports.AllStoreName = '_storeName_llej_' + config.locationUrl;
exports.default = config;
},{}],"../网页笔记/util.ts":[function(require,module,exports) {
"use strict";

var __awaiter = this && this.__awaiter || function (thisArg, _arguments, P, generator) {
  function adopt(value) {
    return value instanceof P ? value : new P(function (resolve) {
      resolve(value);
    });
  }

  return new (P || (P = Promise))(function (resolve, reject) {
    function fulfilled(value) {
      try {
        step(generator.next(value));
      } catch (e) {
        reject(e);
      }
    }

    function rejected(value) {
      try {
        step(generator["throw"](value));
      } catch (e) {
        reject(e);
      }
    }

    function step(result) {
      result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected);
    }

    step((generator = generator.apply(thisArg, _arguments || [])).next());
  });
};

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.log = exports.ajax_get = exports.getJSon = exports.nodePath = exports.getIndex = exports.getSelectors = exports.copyTitle = void 0;

const config_1 = require("./config");
/** 用于复制文本的input */


const input_copy = document.createElement("textarea");
input_copy.id = "__";
input_copy.style.display = "none"; //不能设置为none因为会导致没有可访问性

input_copy.setAttribute("style", `
        position: absolute;
        top: -9999px;
        left: -9999px;`);
document.body.appendChild(input_copy);
/** 复制一个元素的titil 或者一段字符串到剪贴板 */

function copyTitle(el) {
  let title;
  if (typeof el === "string") title = el;else title = el.getAttribute("title");
  input_copy.setAttribute("readonly", "readonly");
  input_copy.setAttribute("value", title);
  input_copy.value = title;
  input_copy.select();
  input_copy.setSelectionRange(0, 9999);
  document.execCommand("copy");
}

exports.copyTitle = copyTitle;
/** 工具类 */

exports.default = {
  copyTitle
};
/** 获取一个元素的选择器 */

function getSelectors(el) {
  /** 通过path路径来确定元素 */
  let pathSelectors = nodePath(el).reverse().map(el => {
    return el.nodeName + `:nth-child(${getIndex(el)})`;
  }).join(">");
  /** 通过id以及class来确定元素 */

  let id_className = "";
  const id = el.id;
  if (id) id_className += `#${id}`;
  el.classList.forEach(className => {
    id_className += `.${className}`;
  });
  /** nth-child 选择 看它是第几个元素 */

  const index = getIndex(el);
  /** 最终构造出来的选择器 */

  return `${pathSelectors}${id_className}:nth-child(${index})`;
}

exports.getSelectors = getSelectors;
/** 获取元素它在第几位 */

function getIndex(el) {
  if (el.nodeName === "HTML") return 1;
  return 1 + Array.from(el.parentElement.children).findIndex(child => child === el);
}

exports.getIndex = getIndex;
/** 获取一个元素的所有父节点到html为止  */

function nodePath(...path) {
  while (path[path.length - 1].parentElement != null) {
    path.push(path[path.length - 1].parentElement);
  }
  /** 只需要是HTMLElement的 */


  const HTMLElementPath = path.filter(el => el instanceof HTMLElement);
  return HTMLElementPath;
}

exports.nodePath = nodePath;

function getJSon(url, data) {
  return __awaiter(this, void 0, void 0, function* () {
    const str = yield ajax_get(url, data);
    const res = JSON.parse(str);
    console.log(url, data, res);
    return res;
  });
}

exports.getJSon = getJSon;
/** 油猴的ajaxget */

function ajax_get(url, data) {
  if (data) url += "?" + jsonToURLpar(data);
  if (window.hasOwnProperty("GM") && window.hasOwnProperty("GM")) return new Promise((resolve, reject) => {
    GM.xmlHttpRequest({
      method: "GET",
      url,
      onload: function (response) {
        resolve(response.responseText);
      },
      onerror: reject
    });
  });else return new Promise((resolve, reject) => {
    const xhr = new XMLHttpRequest();
    xhr.addEventListener("load", function () {
      resolve(xhr.responseText);
    });
    xhr.addEventListener("error", reject);
    xhr.open("get", url);
    xhr.send();
  });
}

exports.ajax_get = ajax_get;
/** json 转 urlpar 只能转一层 */

function jsonToURLpar(json) {
  return Object.keys(json).map(function (key) {
    return encodeURIComponent(key) + "=" + encodeURIComponent(json[key]);
  }).join("&");
}
/** 开发时的调试log */


function log(...arg) {
  if (config_1.isDev) console.log(`[dev] `, ...arg);
}

exports.log = log;
},{"./config":"../网页笔记/config.ts"}],"去除顶部遮挡.user.ts":[function(require,module,exports) {
"use strict"; // ==UserScript==
// @name         去除顶部遮挡
// @namespace    http://tampermonkey.net/
// @version      1.0.0
// @description  我算法不太行可能通用性不行，自测(简书，google,知乎)没问题
// @author       崮生 [email protected]
// @match        *
// @include      *
// @grant        unsafeWindow
// @connect      shenzilong.cn

var __awaiter = this && this.__awaiter || function (thisArg, _arguments, P, generator) {
  function adopt(value) {
    return value instanceof P ? value : new P(function (resolve) {
      resolve(value);
    });
  }

  return new (P || (P = Promise))(function (resolve, reject) {
    function fulfilled(value) {
      try {
        step(generator.next(value));
      } catch (e) {
        reject(e);
      }
    }

    function rejected(value) {
      try {
        step(generator["throw"](value));
      } catch (e) {
        reject(e);
      }
    }

    function step(result) {
      result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected);
    }

    step((generator = generator.apply(thisArg, _arguments || [])).next());
  });
};

Object.defineProperty(exports, "__esModule", {
  value: true
});

const __1 = require("../util/fun/\u9632\u6296");

const util_1 = require("../\u7F51\u9875\u7B14\u8BB0/util"); // ==/UserScript==


(function () {
  return __awaiter(this, void 0, void 0, function* () {
    const uw = window.unsafeWindow ? window.unsafeWindow : window;
    const style = document.createElement("style");
    const className = "llej_hide";
    style.innerHTML = `
  .${className}{
    opacity:0
  }
  `;
    document.body.appendChild(style);
    window.addEventListener("scroll", __1.debounce(event => {
      if (document.documentElement.scrollTop < 100) {
        /** 还原 */
        // console.log("小于100", document.querySelectorAll("." + className));
        return Array.from(document.querySelectorAll("." + className)).forEach(el => el.classList.remove(className));
      }

      if (document.querySelectorAll("." + className).length) {
        /** 已存在疑似者，不在捕获 */
        return;
      }

      const x = window.innerWidth / 2;
      const y = window.innerHeight / 2;
      const top_el = document.elementFromPoint(x, 30);
      const center_el = document.elementFromPoint(x, y); // console.log(top_el, center_el);

      const top_selector = util_1.getSelectors(top_el);
      const center_selector = util_1.getSelectors(center_el);
      const min_length = top_selector.length < center_selector.length ? top_selector.length : center_selector.length;
      /** 获取最顶上的和主体不一致的元素的和主体同一级的祖先元素 */

      let top_parent_selector;

      for (let i = 0; i < min_length; i++) {
        if (top_selector[i] !== center_selector[i]) {
          top_parent_selector = top_selector.slice(0, i) + top_selector.slice(i).replace(/(.*?)>.*/, "$1");
          break;
        }
      }

      const top_parent = document.querySelector(top_parent_selector);

      if (isHeader(top_parent)) {
        top_parent.classList.add(className);
        console.log(top_parent_selector, center_selector);
      }
    }, 100));
  });
})();

function isHeader(el) {
  const rect = el.getBoundingClientRect();
  console.log("疑似者", {
    "rect.bottom ": rect.bottom,
    "rect.top ": rect.top
  });

  if (
  /** 高过一百px不再可能是了吧 */
  rect.bottom > 100) {
    return false;
  }

  return true;
}
},{"../util/fun/防抖":"../util/fun/防抖.ts","../网页笔记/util":"../网页笔记/util.ts"}],"C:/Users/llej/AppData/Roaming/npm/node_modules/parcel/src/builtins/hmr-runtime.js":[function(require,module,exports) {
var global = arguments[3];
var OVERLAY_ID = '__parcel__error__overlay__';
var OldModule = module.bundle.Module;

function Module(moduleName) {
  OldModule.call(this, moduleName);
  this.hot = {
    data: module.bundle.hotData,
    _acceptCallbacks: [],
    _disposeCallbacks: [],
    accept: function (fn) {
      this._acceptCallbacks.push(fn || function () {});
    },
    dispose: function (fn) {
      this._disposeCallbacks.push(fn);
    }
  };
  module.bundle.hotData = null;
}

module.bundle.Module = Module;
var checkedAssets, assetsToAccept;
var parent = module.bundle.parent;

if ((!parent || !parent.isParcelRequire) && typeof WebSocket !== 'undefined') {
  var hostname = "" || location.hostname;
  var protocol = location.protocol === 'https:' ? 'wss' : 'ws';
  var ws = new WebSocket(protocol + '://' + hostname + ':' + "51113" + '/');

  ws.onmessage = function (event) {
    checkedAssets = {};
    assetsToAccept = [];
    var data = JSON.parse(event.data);

    if (data.type === 'update') {
      var handled = false;
      data.assets.forEach(function (asset) {
        if (!asset.isNew) {
          var didAccept = hmrAcceptCheck(global.parcelRequire, asset.id);

          if (didAccept) {
            handled = true;
          }
        }
      }); // Enable HMR for CSS by default.

      handled = handled || data.assets.every(function (asset) {
        return asset.type === 'css' && asset.generated.js;
      });

      if (handled) {
        console.clear();
        data.assets.forEach(function (asset) {
          hmrApply(global.parcelRequire, asset);
        });
        assetsToAccept.forEach(function (v) {
          hmrAcceptRun(v[0], v[1]);
        });
      } else if (location.reload) {
        // `location` global exists in a web worker context but lacks `.reload()` function.
        location.reload();
      }
    }

    if (data.type === 'reload') {
      ws.close();

      ws.onclose = function () {
        location.reload();
      };
    }

    if (data.type === 'error-resolved') {
      console.log('[parcel] ✨ Error resolved');
      removeErrorOverlay();
    }

    if (data.type === 'error') {
      console.error('[parcel] 🚨  ' + data.error.message + '\n' + data.error.stack);
      removeErrorOverlay();
      var overlay = createErrorOverlay(data);
      document.body.appendChild(overlay);
    }
  };
}

function removeErrorOverlay() {
  var overlay = document.getElementById(OVERLAY_ID);

  if (overlay) {
    overlay.remove();
  }
}

function createErrorOverlay(data) {
  var overlay = document.createElement('div');
  overlay.id = OVERLAY_ID; // html encode message and stack trace

  var message = document.createElement('div');
  var stackTrace = document.createElement('pre');
  message.innerText = data.error.message;
  stackTrace.innerText = data.error.stack;
  overlay.innerHTML = '<div style="background: black; font-size: 16px; color: white; position: fixed; height: 100%; width: 100%; top: 0px; left: 0px; padding: 30px; opacity: 0.85; font-family: Menlo, Consolas, monospace; z-index: 9999;">' + '<span style="background: red; padding: 2px 4px; border-radius: 2px;">ERROR</span>' + '<span style="top: 2px; margin-left: 5px; position: relative;">🚨</span>' + '<div style="font-size: 18px; font-weight: bold; margin-top: 20px;">' + message.innerHTML + '</div>' + '<pre>' + stackTrace.innerHTML + '</pre>' + '</div>';
  return overlay;
}

function getParents(bundle, id) {
  var modules = bundle.modules;

  if (!modules) {
    return [];
  }

  var parents = [];
  var k, d, dep;

  for (k in modules) {
    for (d in modules[k][1]) {
      dep = modules[k][1][d];

      if (dep === id || Array.isArray(dep) && dep[dep.length - 1] === id) {
        parents.push(k);
      }
    }
  }

  if (bundle.parent) {
    parents = parents.concat(getParents(bundle.parent, id));
  }

  return parents;
}

function hmrApply(bundle, asset) {
  var modules = bundle.modules;

  if (!modules) {
    return;
  }

  if (modules[asset.id] || !bundle.parent) {
    var fn = new Function('require', 'module', 'exports', asset.generated.js);
    asset.isNew = !modules[asset.id];
    modules[asset.id] = [fn, asset.deps];
  } else if (bundle.parent) {
    hmrApply(bundle.parent, asset);
  }
}

function hmrAcceptCheck(bundle, id) {
  var modules = bundle.modules;

  if (!modules) {
    return;
  }

  if (!modules[id] && bundle.parent) {
    return hmrAcceptCheck(bundle.parent, id);
  }

  if (checkedAssets[id]) {
    return;
  }

  checkedAssets[id] = true;
  var cached = bundle.cache[id];
  assetsToAccept.push([bundle, id]);

  if (cached && cached.hot && cached.hot._acceptCallbacks.length) {
    return true;
  }

  return getParents(global.parcelRequire, id).some(function (id) {
    return hmrAcceptCheck(global.parcelRequire, id);
  });
}

function hmrAcceptRun(bundle, id) {
  var cached = bundle.cache[id];
  bundle.hotData = {};

  if (cached) {
    cached.hot.data = bundle.hotData;
  }

  if (cached && cached.hot && cached.hot._disposeCallbacks.length) {
    cached.hot._disposeCallbacks.forEach(function (cb) {
      cb(bundle.hotData);
    });
  }

  delete bundle.cache[id];
  bundle(id);
  cached = bundle.cache[id];

  if (cached && cached.hot && cached.hot._acceptCallbacks.length) {
    cached.hot._acceptCallbacks.forEach(function (cb) {
      cb();
    });

    return true;
  }
}
},{}]},{},["C:/Users/llej/AppData/Roaming/npm/node_modules/parcel/src/builtins/hmr-runtime.js","去除顶部遮挡.user.ts"], null)
//# sourceMappingURL=/去除顶部遮挡.user.js.map