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How to concatenate the elements of an array into a string using a specified character?

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As an experienced veteran in understanding the CMS content management of AnQi, I know that in daily operations, how to efficiently process and display data is the key to enhancing the user experience and content value of the website.AnQi CMS with its powerful template engine provides us with great flexibility.Today, let's delve into a very common requirement in content display: how to concatenate multiple elements in an array into a string with a specified character.This is crucial for scenarios such as aggregating keywords, image lists, or handling multiple choice custom fields.

Skillfully usejoinFilter to concatenate array elements

In AnQi CMS template syntax,joinThe filter is the tool to achieve this function. It can merge an array (whether it contains strings or numeric elements of basic types) into a single string according to the concatenation character you set.This operation is extremely convenient for the formatted output of data.

joinThe basic usage of the filter is concise and clear:

{{ 数组变量 | join:"分隔符" }}

Here, 数组变量It refers to the template variable you need to perform the connection operation, which must be an array type. And"分隔符"This is a string that will be inserted between each element of the array, acting as a separator. For example, if you have a template with a namecategoriesAn array of strings that contains multiple category names, you can concatenate them in the following way:

`{{ categories | join

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