What are Custom pipes?

Custom pipes are user-defined functions that transform input data into a desired output format. They provide a convenient way to encapsulate data transformation logic and reuse it throughout your Angular application. Custom pipes can be used to perform various operations on data, such as formatting strings, filtering arrays, or performing complex calculations.

Features:

• Reusability: Custom pipes can be used across multiple components, which helps in code reusability and maintainability.
• Separation of Concerns: By encapsulating data transformation logic within pipes, you can separate presentation concerns from business logic, making your code more organized and easier to understand.
• Declarative Syntax: Custom pipes can be used directly in component templates using a simple and declarative syntax, making it easier to apply data transformations without cluttering the component’s logic.
• Chainability: Pipes in Angular can be chained together, allowing you to apply multiple transformations in a single expression.

Uses:

• Formatting dates, currency, or numbers
• Transforming text (e.g., uppercase, lowercase, truncation)
• Filtering and sorting arrays or collections
• Implementing custom business rules or calculations
• Applying complex transformations based on multiple inputs or conditions

Angular provides a powerful feature called pipes, which allows you to transform data before displaying it in your component’s template. While Angular comes with a set of built-in pipes, you can also create your own custom pipes to suit your specific requirements. In this article, we will explore how to register and use custom pipes in an Angular 17 application.

Prerequisites:

• Node >= 18.13.0
• Angular Cli v17