百度广告反制
// ==UserScript==
// @name ant-baidu-adv
// @version 0.1.0
// @namespace wings-j.cn
// @description 百度广告反制
// @author WingsJ
// @match https://www.baidu.com/*
// @icon https://www.google.com/s2/favicons?domain=baidu.com
// @license MIT
// ==/UserScript==
(function () {
'use strict';
var MutationObserver = window.MutationObserver || window.WebKitMutationObserver || window.MozMutationObserver;
/*
* Copyright 2012 The Polymer Authors. All rights reserved.
* Use of this source code is goverened by a BSD-style
* license that can be found in the LICENSE file.
*/
var WeakMap = window.WeakMap;
if (typeof WeakMap === 'undefined') {
var defineProperty = Object.defineProperty;
var counter = Date.now() % 1e9;
WeakMap = function WeakMap() {
this.name = '__st' + (Math.random() * 1e9 >>> 0) + (counter++ + '__');
};
WeakMap.prototype = {
set: function set(key, value) {
var entry = key[this.name];
if (entry && entry[0] === key) entry[1] = value;else defineProperty(key, this.name, {
value: [key, value],
writable: true
});
return this;
},
get: function get(key) {
var entry;
return (entry = key[this.name]) && entry[0] === key ? entry[1] : undefined;
},
'delete': function _delete(key) {
var entry = key[this.name];
if (!entry) return false;
var hasValue = entry[0] === key;
entry[0] = entry[1] = undefined;
return hasValue;
},
has: function has(key) {
var entry = key[this.name];
if (!entry) return false;
return entry[0] === key;
}
};
}
var registrationsTable = new WeakMap(); // We use setImmediate or postMessage for our future callback.
var setImmediate = window.msSetImmediate; // Use post message to emulate setImmediate.
if (!setImmediate) {
var setImmediateQueue = [];
var sentinel = String(Math.random());
window.addEventListener('message', function (e) {
if (e.data === sentinel) {
var queue = setImmediateQueue;
setImmediateQueue = [];
queue.forEach(function (func) {
func();
});
}
});
setImmediate = function setImmediate(func) {
setImmediateQueue.push(func);
window.postMessage(sentinel, '*');
};
} // This is used to ensure that we never schedule 2 callas to setImmediate
var isScheduled = false; // Keep track of observers that needs to be notified next time.
var scheduledObservers = [];
/**
* Schedules |dispatchCallback| to be called in the future.
* @param {MutationObserver} observer
*/
function scheduleCallback(observer) {
scheduledObservers.push(observer);
if (!isScheduled) {
isScheduled = true;
setImmediate(dispatchCallbacks);
}
}
function wrapIfNeeded(node) {
return window.ShadowDOMPolyfill && window.ShadowDOMPolyfill.wrapIfNeeded(node) || node;
}
function dispatchCallbacks() {
// http://dom.spec.whatwg.org/#mutation-observers
isScheduled = false; // Used to allow a new setImmediate call above.
var observers = scheduledObservers;
scheduledObservers = []; // Sort observers based on their creation UID (incremental).
observers.sort(function (o1, o2) {
return o1.uid_ - o2.uid_;
});
var anyNonEmpty = false;
observers.forEach(function (observer) {
// 2.1, 2.2
var queue = observer.takeRecords(); // 2.3. Remove all transient registered observers whose observer is mo.
removeTransientObserversFor(observer); // 2.4
if (queue.length) {
observer.callback_(queue, observer);
anyNonEmpty = true;
}
}); // 3.
if (anyNonEmpty) dispatchCallbacks();
}
function removeTransientObserversFor(observer) {
observer.nodes_.forEach(function (node) {
var registrations = registrationsTable.get(node);
if (!registrations) return;
registrations.forEach(function (registration) {
if (registration.observer === observer) registration.removeTransientObservers();
});
});
}
/**
* This function is used for the "For each registered observer observer (with
* observer's options as options) in target's list of registered observers,
* run these substeps:" and the "For each ancestor ancestor of target, and for
* each registered observer observer (with options options) in ancestor's list
* of registered observers, run these substeps:" part of the algorithms. The
* |options.subtree| is checked to ensure that the callback is called
* correctly.
*
* @param {Node} target
* @param {function(MutationObserverInit):MutationRecord} callback
*/
function forEachAncestorAndObserverEnqueueRecord(target, callback) {
for (var node = target; node; node = node.parentNode) {
var registrations = registrationsTable.get(node);
if (registrations) {
for (var j = 0; j < registrations.length; j++) {
var registration = registrations[j];
var options = registration.options; // Only target ignores subtree.
if (node !== target && !options.subtree) continue;
var record = callback(options);
if (record) registration.enqueue(record);
}
}
}
}
var uidCounter = 0;
/**
* The class that maps to the DOM MutationObserver interface.
* @param {Function} callback.
* @constructor
*/
function JsMutationObserver(callback) {
this.callback_ = callback;
this.nodes_ = [];
this.records_ = [];
this.uid_ = ++uidCounter;
}
JsMutationObserver.prototype = {
observe: function observe(target, options) {
target = wrapIfNeeded(target); // 1.1
if (!options.childList && !options.attributes && !options.characterData || // 1.2
options.attributeOldValue && !options.attributes || // 1.3
options.attributeFilter && options.attributeFilter.length && !options.attributes || // 1.4
options.characterDataOldValue && !options.characterData) {
throw new SyntaxError();
}
var registrations = registrationsTable.get(target);
if (!registrations) registrationsTable.set(target, registrations = []); // 2
// If target's list of registered observers already includes a registered
// observer associated with the context object, replace that registered
// observer's options with options.
var registration;
for (var i = 0; i < registrations.length; i++) {
if (registrations[i].observer === this) {
registration = registrations[i];
registration.removeListeners();
registration.options = options;
break;
}
} // 3.
// Otherwise, add a new registered observer to target's list of registered
// observers with the context object as the observer and options as the
// options, and add target to context object's list of nodes on which it
// is registered.
if (!registration) {
registration = new Registration(this, target, options);
registrations.push(registration);
this.nodes_.push(target);
}
registration.addListeners();
},
disconnect: function disconnect() {
this.nodes_.forEach(function (node) {
var registrations = registrationsTable.get(node);
for (var i = 0; i < registrations.length; i++) {
var registration = registrations[i];
if (registration.observer === this) {
registration.removeListeners();
registrations.splice(i, 1); // Each node can only have one registered observer associated with
// this observer.
break;
}
}
}, this);
this.records_ = [];
},
takeRecords: function takeRecords() {
var copyOfRecords = this.records_;
this.records_ = [];
return copyOfRecords;
}
};
/**
* @param {string} type
* @param {Node} target
* @constructor
*/
function MutationRecord(type, target) {
this.type = type;
this.target = target;
this.addedNodes = [];
this.removedNodes = [];
this.previousSibling = null;
this.nextSibling = null;
this.attributeName = null;
this.attributeNamespace = null;
this.oldValue = null;
}
function copyMutationRecord(original) {
var record = new MutationRecord(original.type, original.target);
record.addedNodes = original.addedNodes.slice();
record.removedNodes = original.removedNodes.slice();
record.previousSibling = original.previousSibling;
record.nextSibling = original.nextSibling;
record.attributeName = original.attributeName;
record.attributeNamespace = original.attributeNamespace;
record.oldValue = original.oldValue;
return record;
}
var currentRecord, recordWithOldValue;
/**
* Creates a record without |oldValue| and caches it as |currentRecord| for
* later use.
* @param {string} oldValue
* @return {MutationRecord}
*/
function getRecord(type, target) {
return currentRecord = new MutationRecord(type, target);
}
/**
* Gets or creates a record with |oldValue| based in the |currentRecord|
* @param {string} oldValue
* @return {MutationRecord}
*/
function getRecordWithOldValue(oldValue) {
if (recordWithOldValue) return recordWithOldValue;
recordWithOldValue = copyMutationRecord(currentRecord);
recordWithOldValue.oldValue = oldValue;
return recordWithOldValue;
}
function clearRecords() {
currentRecord = recordWithOldValue = undefined;
}
/**
* @param {MutationRecord} record
* @return {boolean} Whether the record represents a record from the current
* mutation event.
*/
function recordRepresentsCurrentMutation(record) {
return record === recordWithOldValue || record === currentRecord;
}
/**
* Selects which record, if any, to replace the last record in the queue.
* This returns |null| if no record should be replaced.
*
* @param {MutationRecord} lastRecord
* @param {MutationRecord} newRecord
* @param {MutationRecord}
*/
function selectRecord(lastRecord, newRecord) {
if (lastRecord === newRecord) return lastRecord; // Check if the the record we are adding represents the same record. If
// so, we keep the one with the oldValue in it.
if (recordWithOldValue && recordRepresentsCurrentMutation(lastRecord)) return recordWithOldValue;
return null;
}
/**
* Class used to represent a registered observer.
* @param {MutationObserver} observer
* @param {Node} target
* @param {MutationObserverInit} options
* @constructor
*/
function Registration(observer, target, options) {
this.observer = observer;
this.target = target;
this.options = options;
this.transientObservedNodes = [];
}
Registration.prototype = {
enqueue: function enqueue(record) {
var records = this.observer.records_;
var length = records.length; // There are cases where we replace the last record with the new record.
// For example if the record represents the same mutation we need to use
// the one with the oldValue. If we get same record (this can happen as we
// walk up the tree) we ignore the new record.
if (records.length > 0) {
var lastRecord = records[length - 1];
var recordToReplaceLast = selectRecord(lastRecord, record);
if (recordToReplaceLast) {
records[length - 1] = recordToReplaceLast;
return;
}
} else {
scheduleCallback(this.observer);
}
records[length] = record;
},
addListeners: function addListeners() {
this.addListeners_(this.target);
},
addListeners_: function addListeners_(node) {
var options = this.options;
if (options.attributes) node.addEventListener('DOMAttrModified', this, true);
if (options.characterData) node.addEventListener('DOMCharacterDataModified', this, true);
if (options.childList) node.addEventListener('DOMNodeInserted', this, true);
if (options.childList || options.subtree) node.addEventListener('DOMNodeRemoved', this, true);
},
removeListeners: function removeListeners() {
this.removeListeners_(this.target);
},
removeListeners_: function removeListeners_(node) {
var options = this.options;
if (options.attributes) node.removeEventListener('DOMAttrModified', this, true);
if (options.characterData) node.removeEventListener('DOMCharacterDataModified', this, true);
if (options.childList) node.removeEventListener('DOMNodeInserted', this, true);
if (options.childList || options.subtree) node.removeEventListener('DOMNodeRemoved', this, true);
},
/**
* Adds a transient observer on node. The transient observer gets removed
* next time we deliver the change records.
* @param {Node} node
*/
addTransientObserver: function addTransientObserver(node) {
// Don't add transient observers on the target itself. We already have all
// the required listeners set up on the target.
if (node === this.target) return;
this.addListeners_(node);
this.transientObservedNodes.push(node);
var registrations = registrationsTable.get(node);
if (!registrations) registrationsTable.set(node, registrations = []); // We know that registrations does not contain this because we already
// checked if node === this.target.
registrations.push(this);
},
removeTransientObservers: function removeTransientObservers() {
var transientObservedNodes = this.transientObservedNodes;
this.transientObservedNodes = [];
transientObservedNodes.forEach(function (node) {
// Transient observers are never added to the target.
this.removeListeners_(node);
var registrations = registrationsTable.get(node);
for (var i = 0; i < registrations.length; i++) {
if (registrations[i] === this) {
registrations.splice(i, 1); // Each node can only have one registered observer associated with
// this observer.
break;
}
}
}, this);
},
handleEvent: function handleEvent(e) {
// Stop propagation since we are managing the propagation manually.
// This means that other mutation events on the page will not work
// correctly but that is by design.
e.stopImmediatePropagation();
switch (e.type) {
case 'DOMAttrModified':
// http://dom.spec.whatwg.org/#concept-mo-queue-attributes
var name = e.attrName;
var namespace = e.relatedNode.namespaceURI;
var target = e.target; // 1.
var record = new getRecord('attributes', target);
record.attributeName = name;
record.attributeNamespace = namespace; // 2.
var oldValue = null;
if (!(typeof MutationEvent !== 'undefined' && e.attrChange === MutationEvent.ADDITION)) oldValue = e.prevValue;
forEachAncestorAndObserverEnqueueRecord(target, function (options) {
// 3.1, 4.2
if (!options.attributes) return; // 3.2, 4.3
if (options.attributeFilter && options.attributeFilter.length && options.attributeFilter.indexOf(name) === -1 && options.attributeFilter.indexOf(namespace) === -1) {
return;
} // 3.3, 4.4
if (options.attributeOldValue) return getRecordWithOldValue(oldValue); // 3.4, 4.5
return record;
});
break;
case 'DOMCharacterDataModified':
// http://dom.spec.whatwg.org/#concept-mo-queue-characterdata
var target = e.target; // 1.
var record = getRecord('characterData', target); // 2.
var oldValue = e.prevValue;
forEachAncestorAndObserverEnqueueRecord(target, function (options) {
// 3.1, 4.2
if (!options.characterData) return; // 3.2, 4.3
if (options.characterDataOldValue) return getRecordWithOldValue(oldValue); // 3.3, 4.4
return record;
});
break;
case 'DOMNodeRemoved':
this.addTransientObserver(e.target);
// Fall through.
case 'DOMNodeInserted':
// http://dom.spec.whatwg.org/#concept-mo-queue-childlist
var target = e.relatedNode;
var changedNode = e.target;
var addedNodes, removedNodes;
if (e.type === 'DOMNodeInserted') {
addedNodes = [changedNode];
removedNodes = [];
} else {
addedNodes = [];
removedNodes = [changedNode];
}
var previousSibling = changedNode.previousSibling;
var nextSibling = changedNode.nextSibling; // 1.
var record = getRecord('childList', target);
record.addedNodes = addedNodes;
record.removedNodes = removedNodes;
record.previousSibling = previousSibling;
record.nextSibling = nextSibling;
forEachAncestorAndObserverEnqueueRecord(target, function (options) {
// 2.1, 3.2
if (!options.childList) return; // 2.2, 3.3
return record;
});
}
clearRecords();
}
};
if (!MutationObserver) {
MutationObserver = JsMutationObserver;
}
var mutationObserver = MutationObserver;
/**
* 监听
*/
/**
* 函数
* @param container 容器
* @param callback 回调函数
*/
function observe(container, callback) {
const observer = new mutationObserver(callback);
observer.observe(container, { childList: true, subtree: true });
}
/**
* 查询
*/
/**
* 函数
* @param container 容器
* @return 广告元素
*/
function query(container) {
let iterator = document.evaluate('//*[text()="广告"]', container);
let result = [];
let node = iterator.iterateNext();
while (node) {
let temp = node;
while (temp.parentNode !== container) {
temp = temp.parentNode;
}
result.push(temp);
node = iterator.iterateNext();
}
return result;
}
/**
* 核心
*/
/**
* 函数
*/
function core() {
let container = document.querySelector('#content_left');
if (container) {
const clear = () => {
let nodes = query(container);
nodes.forEach(a => a.remove());
};
clear();
observe(container, clear);
}
}
/**
* index
*/
core();
})();