Gain insights into Angular’s built-in directives and pipes, and delve into creating custom ones. Learn about their real-world applications to boost your project's performance and code readability.

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Directives and pipes are incredible and often undervalued features of the Angular framework. They allow us to write efficient code, improve application performance, and omit code duplications.

In this course, you will learn about the theory and the working mechanisms of built-in directives and pipes in Angular. You’ll also implement some custom directives and pipes to learn about their real-world application cases. With this course, you will improve your Angular skills and refine your project’s codebase to increase the performance and readability of your code.

Directives and Pipes in Angular

Let's get more practice with a basic structural directive that adds or removes elements.

# Objectives

There might be cases when we want to specify whether an element should be visible only for premium or standard account types. To do that, we want to pass the string that will say whether the element should be visible. Let's see how this works:

```html
<button (click)="doAction()" *appForRoleOnly="premium"> 
	I'm only for premium 
</button>

<button (click)="doAction()" *appForRoleOnly="standard"> 
	I'm only for standard 
</button>
```

# Task
Please write a structural directive that allows such a use. If you need help with the task, please check our `*appPremiumOnly` for hints.

Let’s practice implementing custom structural directives.

Getting Started

Directives

Test: Built-in Directives

Attribute Directives

Test: Attribute Directives

Structural Directives

Test: Structural Directives

Create Your First Data Pipeline with a Dashboard

Advanced Techniques Using Directives

Test: Advanced Directives

Directives Summary

Pipes

Test: Pipes

Pipes summary

Build an E-book Reader in Angular With Gutendex API

Exercise: Customized Structural Directives