站点js屏蔽他人广告详解编程语言

前言

以前自己建设博客的时候，出现一个问题，那就是动不动弹出广告，不晓得这个是怎么查到我的站点的，但是加入了屏蔽js，就没遇到了，在此分享。

正文

防止动态加载script脚本

(function () { 
    var createElement = document.createElement; 
    document.createElement = function (tag) { 
        switch (tag) { 
            case 'script': 
                console.log('禁用动态添加脚本，防止广告加载'); 
                break; 
            default: 
                return createElement.apply(this, arguments); 
        } 
    } 
})(); 

iframe 广告

//注入页面的脚本文件 
$(function() { 
 
    var clearAd = { 
        //由于manifest文件匹配规则只有通配没有非功能，所以可在此处添加不想删除广告的页面 
        checkUrl: function() { 
            var Checkflag = 0, 
                url = window.location.href; 
 
            //手动添加不需要清除广告的域 
            var notDel = [ 
                "www.baidu.com", 
                "taobao.com", 
                "tmall.com", 
                "jd.com" 
            ]; 
 
            //正则匹配 
            for (var i = 0; i < notDel.length; i++) { 
                var reg = new RegExp(notDel[i], "g"); 
 
                if (reg.test(url)) { 
                    console.log('This page does not clear ads.'); 
                    break; 
                } else { 
                    if (i == notDel.length - 1) { 
                        Checkflag = 1; 
                    } 
                } 
            } 
 
            if (Checkflag == 1) { 
                this.clear(); 
                this.findSomeAdPossible(); 
            } 
        }, 
        clear: function() { 
            console.log('Clear Start'); 
            //此处可手动添加广告框id名，去除顽疾ad必备 
            var ad_id_name = [ 
                "cproIframe2001holder", 
                "cproIframe2002holder", 
                "cproIframe2003holder", 
                "cproIframe2004holder", 
                "cproIframe2005holder", 
                "cproIframe2006holder", 
                "cproIframe2007holder", 
                "cproIframe2008holder", 
                "cproIframe2009holder", 
                "id_300x250_banner_top", 
                "ads", 
                "google_image_div", 
                "mx_cs_71603_1261456", 
                "AC_TR86_71603", 
                "cproIframe_u2060917_1", 
                "content_right", 
                "left-promotion", 
                "top_ads", 
                "layerd" 
            ]; 
 
            //此处添加广告框类名 
            var ad_css_name = [ 
                "cproIframe_u410704_3", 
                "img_ad", 
                "hover_btn" 
            ]; 
 
            for (var i = 0; i < ad_id_name.length; i++) { 
                //使用remove删除节点，提升性能 
                $('#' + ad_id_name[i]).remove(); 
            } 
 
            for (var i = 0; i < ad_css_name.length; i++) { 
                $('.' + ad_css_name[i]).remove(); 
            } 
        }, 
        //简单的智能算法 
        findSomeAdPossible: function() { 
            var sap = $('div iframe'), 
                ad_img = $('div script').parent().find('img,embed'), 
                float_img = $('div object').parent().find('img,embed'); 
 
            this.arrayDel(sap, 360, 200); 
            this.arrayDel(ad_img, 350, 150); 
            this.arrayDel(float_img, 350, 150); 
        }, 
        arrayDel: function(arr, conWidth, conHeight) { 
            var len = arr.length; 
 
            for (var i = 0; i < len; i++) { 
                var self = arr.eq(i); 
 
                if (self.width() <= conWidth || self.height() <= conHeight) { 
                    self.remove(); 
                } 
 
            } 
        }, 
        init: function() { 
            this.checkUrl(); 
        } 
    } 
 
    $(document).ready(function() { 
        clearAd.init(); 
 
        //为防止ajax异步延时加载的广告隔4s再清除一次 
        setTimeout(function() { 
            clearAd.init(); 
        }, 4000) 
    }); 
})