如何使用 DOM 元素变量在 GTM 中添加 AggregateRatingin？

Question

我用作自定义 HTML 标签的产品架构代码，用于在 GTM 中使用 DOM 变量实现产品架构..

<script>
var jsonData = {
  "@context": "http://schema.org",
  "@type": "Product",
  "name": {{productName}},
  "image": {{productImg}},
  "url": {{Page URL}},
  "aggregateRating": {
    "@type": "AggregateRating",
"ratingValue": {{avgRating}},
    "reviewCount": {{ratingsCount}},
  }
  }

  var script = document.createElement('script');
  script.type = 'application/ld+json';
  script.text = JSON.stringify(jsonData);
  $("head").append(script);
</script>

如何在 GTM 中为 AggregateRating 变量（avgRating、ratingsCount）配置 DOM 元素变量。

这是标记

<div class="woocommerce-product-rating">
        <div class="star-rating">
            <span style="width:100%">
                <strong class="rating">5.00</strong> out of <span>5</span>              based on <span class="rating">1</span> customer rating          </span>
        </div>
        <a href="#reviews" class="woocommerce-review-link" rel="nofollow">(<span class="count">1</span> customer review)</a>    </div>

Answer 1

您需要在 GTM 中创建两个变量

1) 转到 Variables->User-Defined Variables->New->Custom Javascript

2) 创建名称为 ProductAvgRating 和 JS 代码的变量：

function () {
  try {
    return parseFloat(document.querySelector('.woocommerce-product-rating strong.rating').innerText);
  }
  catch(e) {return 0;}
}

2) 创建名称为 ProductRatingsCount 和 JS 代码的变量：

function () {
  try {
    return parseInt(document.querySelector('.woocommerce-product-rating span.rating').innerText);
  }
  catch(e) {return 0;}
}

然后像这样更改您的 html 标签：

<script>
var jsonData = {
  "@context": "http://schema.org",
  "@type": "Product",
  "name": {{productName}},
  "image": {{productImg}},
  "url": {{Page URL}},
  "aggregateRating": {
    "@type": "AggregateRating",
"ratingValue": {{ProductAvgRating}},
    "reviewCount": {{ProductRatingsCount}},
  }
  }

  var script = document.createElement('script');
  script.type = 'application/ld+json';
  script.text = JSON.stringify(jsonData);
  $("head").append(script);
</script>

P.S。你没有问 productName 和 productImg 变量，我猜你已经知道了

如何使用 DOM 元素变量在 GTM 中添加 AggregateRatingin？

How to add AggregateRatingin in GTM using DOM element Variables?

schema

google-tag-manager

json-ld