https://www.brandingbeez.co.uk/js/third-party-loader.js

1
2(function () {
3  const GTM_ID = "GTM-KP5XRG5D";
4
5  /* ================================
6     BOT GUARD (Analytics Clean)
7  ================================= */
8  const isBot = /bot|crawler|spider|crawling/i.test(navigator.userAgent);
9  if (isBot) return;
10
11  /* ================================
12     HELPERS
13  ================================= */
14  function onIdle(cb, timeout = 3000) {
15    if ("requestIdleCallback" in window) {
16      requestIdleCallback(cb, { timeout });
17    } else {
18      setTimeout(cb, Math.min(timeout, 2000));
19    }
20  }
21
22  function afterDelay(ms, cb) {
23    setTimeout(cb, ms);
24  }
25
26  function onceUserIntent(cb) {
27    let done = false;
28
29    const run = () => {
30      if (done) return;
31      done = true;
32      cleanup();
33      cb();
34    };
35
36    const cleanup = () => {
37      window.removeEventListener("scroll", run, true);
38      window.removeEventListener("pointerdown", run, true);
39      window.removeEventListener("keydown", run, true);
40      window.removeEventListener("touchstart", run, true);
41    };
42
43    ["scroll", "pointerdown", "keydown", "touchstart"].forEach((evt) =>
44      window.addEventListener(evt, run, { capture: true, passive: true })
45    );
46
47    afterDelay(12000, run);
48  }
49
50  function loadScriptOnce(id, src, onloadCb) {
51    if (document.getElementById(id)) return;
52
53    const s = document.createElement("script");
54    s.id = id;
55    s.async = true;
56    s.src = src;
57
58    s.onload = () => {
59      if (typeof onloadCb === "function") onloadCb();
60    };
61
62    document.head.appendChild(s);
63  }
64
65  /* ================================
66     CONFIG (GTM + FALLBACK DIRECT)
67  ================================= */
68  const USE_GTM = true;
69  const LOAD_VENDORS_DIRECTLY = true;
70
71  /* ================================
72     LOADERS
73  ================================= */
74
75  function loadGTM() {
76    if (window.google_tag_manager || window._gtm_loaded) return;
77
78    window._gtm_loaded = true;
79    window.dataLayer = window.dataLayer || [];
80    window.dataLayer.push({ "gtm.start": Date.now(), event: "gtm.js" });
81
82    loadScriptOnce(
83      "bb-gtm",
84      "https://www.googletagmanager.com/gtm.js?id=" + GTM_ID
85    );
86  }
87
88  function loadClarity() {
89    if (window.clarity || window._clarity_loaded) return;
90    window._clarity_loaded = true;
91
92    (function (c, l, a, r, i, t, y) {
93      c[a] =
94        c[a] ||
95        function () {
96          (c[a].q = c[a].q || []).push(arguments);
97        };
98      t = l.createElement(r);
99      t.async = 1;
100      t.src = "https://www.clarity.ms/tag/" + i;
101      y = l.getElementsByTagName(r)[0];
102      y.parentNode.insertBefore(t, y);
103    })(window, document, "clarity", "script", "umfi093rcx");
104  }
105
106  function loadHotjar() {
107    if (window.hj || window._hj_loaded) return;
108
109    window._hj_loaded = true;
110    window._hjSettings = { hjid: 6498478, hjsv: 6 };
111
112    window.hj =
113      window.hj ||
114      function () {
115        (window.hj.q = window.hj.q || []).push(arguments);
116      };
117
118    loadScriptOnce(
119      "bb-hotjar",
120      "https://static.hotjar.com/c/hotjar-6498478.js?sv=6"
121    );
122  }
123
124  /* ================================
125     STRATEGY (FINAL)
126  ================================= */
127
128  // 1) Always try GTM first
129  if (USE_GTM) {
130    onIdle(loadGTM, 500);
131  }
132
133  // 2) Fallback vendors if GTM does not load them
134  if (LOAD_VENDORS_DIRECTLY) {
135    afterDelay(3500, () => {
136      if (typeof window.clarity === "undefined") {
137        onIdle(loadClarity, 4000);
138      }
139    });
140
141    onceUserIntent(() => {
142      afterDelay(1500, () => {
143        if (typeof window.hj === "undefined") {
144          onIdle(loadHotjar, 5000);
145        }
146      });
147    });
148  }
149})();