In website content operation, we often need to understand the frequency of certain specific keywords appearing in articles, product descriptions, and other texts.This is very valuable for SEO optimization, content quality analysis, and even just data statistics.countFilter, which can help us easily achieve this goal.

UnderstandingcountFilter

In simple terms,countThe filter is used to calculate how many times a keyword appears in a given string or array (Go language slice). Its syntax is concise and clear, easy to get started with, whether you want to count the frequency of a word in an article title or check for duplicate tags in a list.countFilters can always be put to use.

How to count keywords in a string

When we need to count the occurrences of a specific substring in a long text string,countThe filter performs exceptionally well. The usage is very simple, you just need to place the string to be checked inobjthe position, and pass the keyword to be counted as a parameter tocountthe filter, using a colon:Split it up.

For example, if you want to know how many times the word "CMS" appears in the phrase "Welcome to AnQiCMS (AnQiCMS)", you can write the template code like this:

{{ "欢迎使用安企CMS（AnQiCMS）"|count:"CMS" }}

This code's output will be2It should be noted that in strings,countThe filter performs substring matching, which means that as long as the target keyword is a part of the string, whether there are spaces or other characters before or after it, it will be counted.

Count the frequency of elements in the array

Except for strings,countThe filter can also be used to count the frequency of specific elements in the array. Unlike strings, in arrays,countThe filter performs an exact match. This means that the elements in the array must be an exact match with the keyword you specify in order to be counted as an occurrence.

Assuming we have a byfieldsFilter the words split from the string into an array, for example["splits", "the", "string", "安企CMS"]. If you want to count how many times "the" appears in this array, the code would be like this:

{% set values = "splits the string 安企CMS"|fields %}
{{ values|count:"the" }}

Now, the output result is1.

But if you try to count the word '安企', the result will be0:

{% set values = "splits the string 安企CMS"|fields %}
{{ values|count:"安企" }}

This is because there is no element in the array that iscompleteThe feature of exact match, which only matches 'AnQiCMS' with 'AnQi', is very useful when dealing with tags, category lists, or any scenarios that require strict matching.

Actual application scenarios

MasteredcountFilter, you can apply it to various content operation scenarios:

  • Keyword density analysisEnglish: Quickly check the frequency of a core keyword's appearance in an article, assist in adjusting content to optimize SEO performance.
  • English: Content quality monitoring：Count the usage of sensitive words or specific vocabulary to ensure the content conforms to standards.
  • Personalized Content Display：Dynamically adjust the display priority or style of content based on the frequency of appearance in the list according to certain characteristics.

By using flexibilitycountFilter, you can control and analyze website content more precisely, thus improving operation efficiency and user experience.

Summary

countFilter is a small but powerful tool in the security CMS template feature.No matter if you want to perform simple text statistics or complex element counting in arrays, it can help you a hand with its intuitive syntax and precise logic.I hope this article can help you better understand and apply this feature, making the operation of your security CMS website more intuitive.

Common Questions (FAQ)

1.countCan the filter distinguish between uppercase and lowercase?

countThe filter distinguishes between uppercase and lowercase when performing keyword statistics.For example, counting “CMS” and “cms” will yield different results.lowerorupperThe filter converts both the original string and the keywords you want to count to the same case before counting.

2. How to count the number of occurrences of each word in a sentence?

countThe filter is designed to count the occurrences of a single specified keyword. If you want to count the occurrences of a keyword in a sentence,EachThe frequency of the word appears, and generate a result similar to a 'word frequency table', then relying on a filter alone is insufficient. You usually need to combine other template logic, such as first usingcountA filter is not enough. You usually need to combine other template logic, such as first usingfieldsThe filter splits a sentence into an array of words, then iterates through the array, counting each word individually or performing more complex processing.This usually requires more advanced template programming skills or implementation on the backend.

3. How can I count the number of times a keyword appears in the main text of an article, but not in the title or abstract?

In the Anqi CMS, the main content of the article is usually througharchiveDetailTags, for example{{archive.Content}}You can directly use this content variablecountFilter. For example, if you want to count the number of times the keyword 'website operation' appears in the text, you can write the template code like this: {{ archive.Content|count:"网站运营" }}This ensures that the statistical range is limited to the main text of the article.