Loop In Jade Currently Known As Pug Template Engine

If you're a developer looking to level up your web development skills, understanding loops in Jade, now known as Pug, can be a game-changer. Loops are a powerful concept in programming that allow you to perform repetitive tasks more efficiently. In this article, we'll delve into how you can leverage loops in Jade/Pug to enhance your template rendering process.

If you're new to Jade/Pug, it's a concise and expressive templating language that compiles to HTML. The syntax is designed to make writing HTML templates easier and more readable. One of the key features of Jade/Pug is its ability to handle loops seamlessly, making it a popular choice among developers for dynamic content rendering.

To create a loop in Jade/Pug, you can use the "each" keyword followed by the variable name and the array or object you want to iterate over. Let's take a look at a simple example:

ul
  each item in items
    li= item

In this example, we're looping over an array called "items" and rendering a list item for each element in the array. The "item" variable represents the current element being iterated over.

Jade/Pug also supports more complex looping scenarios, such as iterating over objects with key-value pairs. Here's an example:

ul
  each val, key in obj
    li= key + ': ' + val

In this case, we're iterating over an object called "obj" and displaying both the key and value of each pair in a list item.

One useful feature of Jade/Pug loops is the ability to handle conditional rendering within loops. You can use "if" statements to include or exclude elements based on certain conditions. Here's an example:

ul
  each user in users
    if user.isAdmin
      li.admin= user.name + ' (Admin)'
    else
      li= user.name

In this snippet, we're iterating over a list of users and applying a different format to users who have the "isAdmin" property set to true.

It's important to note that Jade/Pug loops are not limited to simple arrays and objects. You can also nest loops within each other to handle multi-dimensional data structures. This allows you to create complex and dynamic templates with ease.

In conclusion, understanding how to leverage loops in Jade/Pug can greatly enhance your templating capabilities. By mastering the syntax and features of loops, you can create more dynamic and interactive web applications. So, roll up your sleeves, practice writing loops in Jade/Pug, and take your web development skills to the next level!