您为什么不使用RDFa,毕竟,您给出的示例“ overstock.com ”,他们正在使用 RDFa 这是该页面的摘录...
<ul itemprop="breadcrumb" class="horizontal-list bcrumbs">
<li typeof="v:Breadcrumb" class="bcrumb-1">
<a property="v:title" rel="v:url" title="Online Shopping" href="http://www.overstock.com/">Online Shopping</a>
</li>
<li typeof="v:Breadcrumb" class="bcrumb-2">
<span class="bcrumb-arrow"></span>
<a property="v:title" rel="v:url" title="Office Supplies" href="http://www.overstock.com/Office-Supplies/22/store.html">
Office Supplies</a>
</li>
<li typeof="v:Breadcrumb" class="bcrumb-3">
<span class="bcrumb-arrow"></span>
<a property="v:title" rel="v:url" title="Office Furniture" href="http://www.overstock.com/Office-Supplies/Office-Furniture/310/dept.html">
Office Furniture</a>
</li>
<li typeof="v:Breadcrumb" class="bcrumb-4">
<span class="bcrumb-arrow"></span>
<a property="v:title" rel="v:url" title="Office Chairs & Accessories" href="http://www.overstock.com/Office-Supplies/Office-Chairs-Accessories/3637/cat.html">
Office Chairs & Accessories</a>
</li>
<li typeof="v:Breadcrumb" class="bcrumb-5">
<span class="bcrumb-arrow"></span>
<a property="v:title" rel="v:url" title="Ergonomic Chairs" href="http://www.overstock.com/Office-Supplies/Ergonomic-Chairs/22529/subcat.html">
Ergonomic Chairs</a>
<i class="last-child"></i>
</li>
`
我可以在这里解释一切,但我坚信我无法匹配谷歌给出的解释。
因此,如果您还没有阅读这些解释(下面的链接),我强烈建议您阅读它们。我希望这些能解决你的问题。