Google Analytics 4

目的：將受眾傳入 Google Analytics 4，可於 Google Ads 選擇受眾投放廣告

匯入 GTM 代碼

下載此 GTM 匯入檔案，於 GTM 管理進行「匯入容器」即可，匯入後即可跳至「GA4 自訂定義」這段落進行設置

Instag-GTM-GA4-20260804.json

10KB

開啟

手動 GTM 設定

增加代碼 Instag GA4 Segments

代碼設定：自訂 HTML
HTML：複製下面 Code
觸發條件：Dom Ready All

<script>
(function () {
  try {
    var rawSegments = {{cookie_itg_segments}};

    if (
      rawSegments === undefined ||
      rawSegments === null ||
      rawSegments === ''
    ) {
      return;
    }

    var segments =
      typeof rawSegments === 'string'
        ? JSON.parse(rawSegments)
        : rawSegments;

    if (
      !segments ||
      !segments.all ||
      typeof segments.all !== 'object'
    ) {
      return;
    }

    window.dataLayer = window.dataLayer || [];

    Object.keys(segments.all)
      .map(function (segmentName) {
        return {
          name: String(segmentName),
          value: Number(segments.all[segmentName])
        };
      })
      .filter(function (item) {
        return (
          item.name &&
          isFinite(item.value) &&
          item.value > 0
        );
      })
      .sort(function (a, b) {
        return b.value - a.value;
      })
      .forEach(function (item) {
        window.dataLayer.push({
          event: 'itg_segment',
          itg_segment_name: item.name,
          itg_segment_value: item.value
        });
      });

  } catch (error) {
    console.warn('[Instag GA4] Segment event error:', error);
  }
})();
</script>