屏蔽知乎网页版首页中夹杂的广告

zhihu.js

// ==UserScript==
// @name         屏蔽知乎网页版首页中夹杂的广告
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  屏蔽知乎网页版首页中夹杂的广告
// @author       Victor Young
// @match        https://*.zhihu.com/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';
    function onElementHeightChange(elm, callback){
        var lastHeight = elm.clientHeight, newHeight;
        (function run(){
            newHeight = elm.clientHeight;
            if( lastHeight != newHeight )
                callback();
            lastHeight = newHeight;

            if( elm.onElementHeightChangeTimer )
                clearTimeout(elm.onElementHeightChangeTimer);

            elm.onElementHeightChangeTimer = setTimeout(run, 200);
        })();
    }

    function findAncestor (el, cls) {
        while ((el = el.parentNode) && el.className.indexOf(cls) < 0);
        return el;
    }

    onElementHeightChange(document.body, function(){
        var classNames = ['Advert', 'Advert--card'];
        classNames.forEach(function(className) {
            Array.from(document.getElementsByClassName(className)).forEach(
                function(element, index, array) {
                    findAncestor(element, 'Card').style.display = 'none';
                }
            );
        });
    });
})();