自定义 JavaScript 变量 GTM 中的解析错误

如何根据 2 个单独的当前变量创建新变量。主要条件是检查数组或小部件选择器的存在，然后返回它的值：

    function() {
      var array = Array.prototype.slice.apply(document.querySelectorAll("div.widget-message.active.active-target a"));
      var length = array.length;
      var x = array.map(function(cn, index) {
        var nameId = cn.href.split("?")[0].split("/").slice(-1)[0].replace("-", " ");
        var urlParams = {{cjs - utility - url params}}(cn.href);
        var name = urlParams.promo_name;
        var creative = urlParams.promo_content;
        return {
          "name": "Widget - Personal - " + name,
          "id": "Widget - Personal - " + nameId + "-" + index,
          "position": "" + (index + 1) + "/" + length,
          "creative" : creative,
          "metric3": 1
        }
      });
      return {
        'ecommerce': {
          'promoView': {
            'promotions': x
          }
        }
      }
    }

第二个是

    function() {
       var array = document.querySelector('[class="btn-new btn-fullwidth popup-trigger"]');
           return {
           'ecommerce': {
          'promoView': {
          "name": "Widget - Personal - " + array.dataset.targetId
          }
        }};
    }