what does {% %} mean in html [closed]

Answer 1

It's a Template Engine system, and its syntax is based on jinja. Another code example:

{% extends "layout.html" %}

{% block body %}
    

        {% for user in users %}
            
{{ user.username }}
        {% endfor %}
    
{% endblock %}

from wikipedia:

Benefits of using template engines include:

• Encouraging organization of source code into operationally-distinct layers (see e.g., MVC)
• Enhancing productivity by reducing unnecessary reproduction of effort
• Enhancing teamwork by allowing separation of work based on skill-set (e.g., artistic vs. technical)

Typical features

Template engines typically include features common to most high-level programming languages, with an emphasis on features for processing plain text. Such features include:

• variables and functions
• text replacement
• file inclusion (or transclusion)
• conditional evaluation and loops

(end from wikipedia)

---

There are a several template engines for PHP. One of them is Twig.

For example instead of writing such this:

You can do this with Twig:

{{ var }}
{{ var|escape }}

And another example:

    
        
            
caption; ?>
        
    

In template engine:

    {% for item in navigation %}
        
{{ item.caption }}
    {% endfor %}