如何检查帖子是否具有特定标签(使用条件标签)? [英] How to check if a post has a specific label (using conditional tags)?

问题描述

我正在使用博客，并且我想根据帖子标签使用不同的<title>标签.例如，如果帖子的标签为:"SOMELABEL1"，则显示为<title>Title1 - Wbsitename</title>；如果帖子的标签为:"SOMELABEL2"，则显示为<title>2222 - Webitename</title>.

I'm using blogger, and I want to use different <title> tags depending on the post labels. For example, if a post has the label: "SOMELABEL1", it will show <title>Title1 - Wbsitename</title>, and if the post has the label: "SOMELABEL2", it will show <title>2222 - Webitename</title>.

我尝试使用以下代码(在页面的中间工作-在正文中)，但没有在开头:

I have tried to use the following code (which is working on the middle of the page - in the body), but not in the head start:

<b:if cond='data:post.labels any (l => l.name in "LABEL1")'>
<title>1111 - Webitename</title>.
<b:else/>
<title>2222 - Webitename</title>.
</b:if>

请帮助.

推荐答案

您无法在Blog小部件外部检查data:post.labels，但好消息是您可以使用Blog小部件中的代码通过JavaScript更改页面标题.

You can not check data:post.labels outside the Blog widget but the good news is that you can use your code inside Blog widget to change the page title via JavaScript.

<b:if cond='data:post.labels any (label => label.name == "LABEL1")'>
    <script type="text/javascript">
        document.title="1111 - Webitename";
    </script>
<b:else/>
    <script type="text/javascript">
        document.title="2222 - Webitename";
    </script>
</b:if>

但是，通过JavaScript更改页面标题不会帮助SEO，因为某些Web爬网程序不支持JavaScript. (Google的)

But changing the page title via JavaScript won't help SEO because some web crawlers do not support JavaScript. (Google's does)

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