Вопрос: Странный javascript в коде? что это?

Лучший ответ: Это мониторинг ошибок https://newrelic.com/

Худший ответ: Если загуглить javascript tidy выведется несколько сайтов, на которых ты сможешь привести этот код в стандартный вид.Вот твой код<script type="text/javascript">
    window.NREUM || (NREUM = {}), __nr_require = function(e, t, n) {
        function r(n) {
            if (!t[n]) {
                var o = t[n] = {
                    exports: {}
                };
                e[n][0].call(o.exports, function(t) {
                    var o = e[n][1][t];
                    return r(o || t)
                }, o, o.exports)
            }
            return t[n].exports
        }
        if ("function" == typeof __nr_require) return __nr_require;
        for (var o = 0; o < n.length; o++) r(n[o]);
        return r
    }({
        1: [function(e, t, n) {
            function r() {}

            function o(e, t, n) {
                return function() {
                    return i(e, [(new Date).getTime()].concat(u(arguments)), t ? null : this, n), t ? void 0 : this
                }
            }
            var i = e("handle"),
                a = e(2),
                u = e(3),
                c = e("ee").get("tracer"),
                f = NREUM;
            "undefined" == typeof window.newrelic && (newrelic = f);
            var s = ["setPageViewName", "setCustomAttribute", "setErrorHandler", "finished", "addToTrace", "inlineHit"],
                l = "api-",
                p = l + "ixn-";
            a(s, function(e, t) {
                f[t] = o(l + t, !0, "api")
            }), f.addPageAction = o(l + "addPageAction", !0), f.setCurrentRouteName = o(l + "routeName", !0), t.exports = newrelic, f.interaction = function() {
                return (new r).get()
            };
            var d = r.prototype = {
                createTracer: function(e, t) {
                    var n = {},
                        r = this,
                        o = "function" == typeof t;
                    return i(p + "tracer", [Date.now(), e, n], r),
                        function() {
                            if (c.emit((o ? "" : "no-") + "fn-start", [Date.now(), r, o], n), o) try {
                                return t.apply(this, arguments)
                            } finally {
                                c.emit("fn-end", [Date.now()], n)
                            }
                        }
                }
            };
            a("setName,setAttribute,save,ignore,onEnd,getContext,end,get".split(","), function(e, t) {
                d[t] = o(p + t)
            }), newrelic.noticeError = function(e) {
                "string" == typeof e && (e = new Error(e)), i("err", [e, (new Date).getTime()])
            }
        }, {}],
        2: [function(e, t, n) {
            function r(e, t) {
                var n = [],
                    r = "",
                    i = 0;
                for (r in e) o.call(e, r) && (n[i] = t(r, e[r]), i += 1);
                return n
            }
            var o = Object.prototype.hasOwnProperty;
            t.exports = r
        }, {}],
        3: [function(e, t, n) {
            function r(e, t, n) {
                t || (t = 0), "undefined" == typeof n && (n = e ? e.length : 0);
                for (var r = -1, o = n - t || 0, i = Array(o < 0 ? 0 : o); ++r < o;) i[r] = e[t + r];
                return i
            }
            t.exports = r
        }, {}],
        ee: [function(e, t, n) {
            function r() {}

            function o(e) {
                function t(e) {
                    return e && e instanceof r ? e : e ? c(e, u, i) : i()
                }

                function n(n, r, o) {
                    if (!p.aborted) {
                        e && e(n, r, o);
                        for (var i = t(o), a = v(n), u = a.length, c = 0; c < u; c++) a[c].apply(i, r);
                        var f = s[w[n]];
                        return f && f.push([y, n, r, i]), i
                    }
                }

                function d(e, t) {
                    b[e] = v(e).concat(t)
                }

                function v(e) {
                    return b[e] || []
                }

                function g(e) {
                    return l[e] = l[e] || o(n)
                }

                function m(e, t) {
                    f(e, function(e, n) {
                        t = t || "feature", w[n] = t, t in s || (s[t] = [])
                    })
                }
                var b = {},
                    w = {},
                    y = {
                        on: d,
                        emit: n,
                        get: g,
                        listeners: v,
                        context: t,
                        buffer: m,
                        abort: a,
                        aborted: !1
                    };
                return y
            }

            function i() {
                return new r
            }

            function a() {
                (s.api || s.feature) && (p.aborted = !0, s = p.backlog = {})
            }
            var u = "nr@context",
                c = e("gos"),
                f = e(2),
                s = {},
                l = {},
                p = t.exports = o();
            p.backlog = s
        }, {}],
        gos: [function(e, t, n) {
            function r(e, t, n) {
                if (o.call(e, t)) return e[t];
                var r = n();
                if (Object.defineProperty && Object.keys) try {
                    return Object.defineProperty(e, t, {
                        value: r,
                        writable: !0,
                        enumerable: !1
                    }), r
                } catch (i) {}
                return e[t] = r, r
            }
            var o = Object.prototype.hasOwnProperty;
            t.exports = r
        }, {}],
        handle: [function(e, t, n) {
            function r(e, t, n, r) {
                o.buffer([e], r), o.emit(e, t, n)
            }
            var o = e("ee").get("handle");
            t.exports = r, r.ee = o
        }, {}],
        id: [function(e, t, n) {
            function r(e) {
                var t = typeof e;
                return !e || "object" !== t && "function" !== t ? -1 : e === window ? 0 : a(e, i, function() {
                    return o++
                })
            }
            var o = 1,
                i = "nr@id",
                a = e("gos");
            t.exports = r
        }, {}],
        loader: [function(e, t, n) {
            function r() {
                if (!h++) {
                    var e = y.info = NREUM.info,
                        t = l.getElementsByTagName("script")[0];
                    if (setTimeout(f.abort, 3e4), !(e && e.licenseKey && e.applicationID && t)) return f.abort();
                    c(b, function(t, n) {
                        e[t] || (e[t] = n)
                    }), u("mark", ["onload", a()], null, "api");
                    var n = l.createElement("script");
                    n.src = "https://" + e.agent, t.parentNode.insertBefore(n, t)
                }
            }

            function o() {
                "complete" === l.readyState && i()
            }

            function i() {
                u("mark", ["domContent", a()], null, "api")
            }

            function a() {
                return (new Date).getTime()
            }
            var u = e("handle"),
                c = e(2),
                f = e("ee"),
                s = window,
                l = s.document,
                p = "addEventListener",
                d = "attachEvent",
                v = s.XMLHttpRequest,
                g = v && v.prototype;
            NREUM.o = {
                ST: setTimeout,
                CT: clearTimeout,
                XHR: v,
                REQ: s.Request,
                EV: s.Event,
                PR: s.Promise,
                MO: s.MutationObserver
            }, e(1);
            var m = "" + location,
                b = {
                    beacon: "bam.nr-data.net",
                    errorBeacon: "bam.nr-data.net",
                    agent: "js-agent.newrelic.com/nr-998.min.js"
                },
                w = v && g && g[p] && !/CriOS/.test(navigator.userAgent),
                y = t.exports = {
                    offset: a(),
                    origin: m,
                    features: {},
                    xhrWrappable: w
                };
            l[p] ? (l[p]("DOMContentLoaded", i, !1), s[p]("load", r, !1)) : (l[d]("onreadystatechange", o), s[d]("onload", r)), u("mark", ["firstbyte", a()], null, "api");
            var h = 0
        }, {}]
    }, {}, ["loader"]);
</script>