Window.onerror error monitoring, send to background

var doc = Document.body | | Document.documentelement;var _onerror = onerror ("); var onerror = function (URL) {this.init (URL);}    Onerror.prototype.init = function (URL) {this.url = Url;this.system = This._system ();    This.browser = This._browser ();    This.host = Location.host;    This.referrer = Document.referrer; This.path = Location.pathname;} Onerror.prototype._system = function () {return Navigator.platform | | "Unknow"; }onerror.prototype._browser = function () {return Navigator.useragent | | "Unknow";};o    Nerror.prototype.catchError = function (DES, path, line, Word) {if (!des) return false; Return This.request ({description:des, File:PATH, Line:line, Word:word});};o    nerror.prototype.request = function (URL, options) {var = this; var default_settings = {"Host": Self.host, "referrer": Self.referrer, "path": Self.path, " Timestamp ": +new Date," system ": Self.system," browser ": Self. Browser, "language": Self.language}; Beacon uses the Post method//img_beacon this[(Issupportbeacon && openbeacon) using get mode? "_beacon": "_img_beacon"] (URL, $.extend (default_settings, Options));};o Nerror.prototype._beacon = function (URL, options) {return Navigator.sendbeacon (URL, json.stringify (options));};o   Nerror.prototype._img_beacon = function (URL, options) {var img = new Image ();   IMG.SRC = URL + "?" + object2urlstring (options);   Img.onload = function () {}; Return Doc.appendchild (IMG);};    function object2urlstring (obj) {var r = [];    for (var i in obj) {R.push (i + "=" + Obj[i]); } return R.join ("&");} Window.onerror = function () {return _onerror.catcherror (arguments);};

Node Express code

Router.get ('/window-onerror/error.gif ', function (req, res, next) {  var $req = getData (req),            data = $req. result,            Isbeacon = $req. Isbeacon;        if (!DATA.UTMB) {            return this.res.end ();        }        Insert Database        console.log (data);        Beacon does not need return value        if (isbeacon) {            return res.end ();        }        IMG Beacon        Else {            //Set HTTP request header to Image/gif            res.writehead (' $ ', {' Content-type ': ' Image/gif '});            1x1 gif is the return value returned            res.end (' ivborw0kggoaaaansuheugaaaaeaaaabcayaaaaffcsjaaaaduleqvqimwngygbgaaaabqabh6fo1aaaaabjru5erkjggg== ', ' base64 ');}        );

　　

Window.onerror error monitoring, send to background