What are pipes in Angular?

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Barry Dyngles

Angular Pipes

What are Pipes in Angular?

Angular is a JavaScript-based front-end web application framework primarily maintained by Google and by a community of individuals and corporations to address many of the challenges encountered in developing single-page applications. It is fully extensible and works well with other libraries.

Pipes are a powerful feature in Angular that allows developers to easily transform data from one format to another. They are a great tool for formatting data in a way that makes it easier to read and understand. With the help of pipes, you can easily filter results, format dates and numbers, and even create custom pipes.

In this article, we will discuss what pipes are, how they work, and how you can use them in your Angular applications.

What are Pipes?

Pipes are a feature of Angular that allow developers to transform data from one format to another. Angular pipes are a great way to format your data in a way that makes it easier to read and understand. Pipes are used to transform values within an Angular template.

When using a pipe, you provide a value to the pipe as an argument. The pipe then takes this value and performs some transformation on it. Pipes can take multiple arguments and can be chained together to perform more complex transformations.

Types of Pipes

Angular provides several built-in pipes that can be used for common data transformations. The most common pipes are the date, currency, and number pipes. These pipes can be used to format dates, currencies, and numbers in a variety of ways.

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Angular also provides the slice pipe, which can be used to slice an array into smaller chunks. The async pipe can be used to subscribe to an observable or promise and return the latest value. The json pipe can be used to format an object as a JSON string.

Creating Custom Pipes

In addition to the built-in pipes, developers can create their own custom pipes to perform custom transformations. Creating custom pipes is easy and requires only a few lines of code.

To create a custom pipe, you must first create a class that implements the PipeTransform interface. The PipeTransform interface defines a single method called transform that takes in a value and returns a transformed value.

The transform method can take any number of arguments and can be used to perform complex transformations. Once the pipe is created, it can be registered in the application’s NgModule and then used in the template using the pipe syntax.

Using Pipes

Using pipes in an Angular application is easy. All you need to do is provide a value to the pipe as an argument and it will perform the transformation.

Pipes can be used to format data in a variety of ways. You can use pipes to format dates, currencies, and numbers. You can also use them to filter results and to create custom pipes.

Conclusion

Pipes are a powerful feature in Angular that allow developers to easily transform data from one format to another. They are a great tool for formatting data in a way that makes it easier to read and understand.

READ  What are types of template in Angular?

Angular provides several built-in pipes for common data transformations, such as the date, currency, and number pipes. Developers can also create custom pipes to perform custom transformations.

Using pipes in an Angular application is easy. All you need to do is provide a value to the pipe as an argument and it will perform the transformation. Pipes are a great way to format data in a way that makes it easier to read and understand.

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