## Table of content

- Introduction
- Brief Overview of Angular Number Pipes
- Example 1: Currency Pipe
- Example 2: Decimal Pipe
- Example 3: Percent Pipe
- Example 4: Date Pipe
- Example 5: Exponential Strength Pipe
- Conclusion

### Introduction

:

Angular is one of the most popular web development frameworks used today. It provides developers with an extensive set of features and tools to create modern and dynamic web applications. One of these features is the number pipe, which is a built-in functionality that helps to format numbers in various ways.

The number pipe is a great way to format numbers according to different criteria. For example, we can use the decimal pipe to format numbers with decimal places, or the currency pipe to format numbers as currency with a symbol. In this article, we will discuss some of the most useful and awesome number pipe examples that can enhance your Angular app.

By leveraging the capabilities of the number pipe, developers can create more user-friendly web applications that provide a better experience for their users. In addition, the number pipe can help to improve the overall performance of your app by reducing the amount of code needed to format numbers in different ways. So, let's dive in and explore some of the best number pipe examples that Angular has to offer.

### Brief Overview of Angular Number Pipes

Angular number pipes are built-in Angular functionalities that allow developers to format and transform numbers in their applications easily. Number pipes enable the rendering of numeric data in different formats such as currency, percentage, decimal, and more. The primary function of number pipes is to simplify the process of handling numeric data and make it easier for developers to present this data in a user-friendly manner.

Using Angular number pipes, it is possible to format numbers according to a range of criteria, such as currency code, number of decimal places, minimum and maximum integer digits, and many more. Developers can also use them to transform numeric data in various ways, such as rounding, adding decimal places, and converting numbers to exponential format.

Number pipes can also help to improve the performance of an Angular application by reducing the amount of code required to display numeric data on a page. By using number pipes, developers can avoid writing complex formatting code and instead rely on the built-in Angular features to efficiently handle numeric data.

In summary, Angular number pipes are a powerful feature of the framework that simplify the process of handling numeric data in web applications. By using number pipes, developers can save time, reduce errors, and improve the performance of their applications.

### Example 1: Currency Pipe

One of the most commonly used number pipes in Angular is the Currency Pipe. It helps to format the numerical values based on currency and apply currency symbols to them. Angular's Currency Pipe is quite flexible and can work with any currency code.

To use the Currency Pipe, you need to first import it from the @angular/common library. Then, you can use it in your templates by simply passing the currency code and value as parameters.

For example, let's say you have a variable called `price`

with value 10.5. You want to display this value with the currency symbol for USD. Here's how you can do it:

```
<p>{{ price | currency: 'USD' }}</p>
```

This will display the value as $10.50.

You can also specify the symbol display mode (before/after the value) and the locale to use for formatting. For instance, if you want to format the value as EUR 10,50 instead of €10.50, you can do it like this:

```
<p>{{ price | currency: 'EUR':'symbol':'1.2-2' }}</p>
```

Here, `1.2-2`

is the number format notation that specifies a minimum of 1 integer digit, a minimum of 2 fractional digits, and a maximum of 2 fractional digits. You can customize this notation based on your requirements.

Overall, the Currency Pipe is a powerful tool that can help you enhance the user experience of your Angular app by making the numerical values more readable and intuitive.

### Example 2: Decimal Pipe

In Angular, you can use the Decimal Pipe to format numbers with decimal points according to your desired format. This pipe allows you to control the display of decimal numbers, including the number of decimal places, the decimal separator, and the thousands separator.

To use the Decimal Pipe in your Angular app, simply add it to your template expression and pass in the number you want to format as an argument. You can specify the number of decimal places you want by adding a colon followed by the number of decimal places you want.

For example, if you want to format the number 1234.5678 with two decimal places and a comma as the decimal separator, you can use the following code snippet:

```
{{1234.5678 | number:'1.2-2'}}
```

The '1.2-2' format string specifies that we want at least one digit before the decimal point, exactly two digits after the decimal point, and at most two digits after the decimal point. The dash '-' specifies that we want to round the number to the nearest two decimal places.

The output of the above code will be:

```
1,234.57
```

You can also use the Decimal Pipe to format numbers as percentages or currencies, with the percent and currency symbols added automatically. For example, the following code will format the number 0.25 as a percentage:

```
{{0.25 | percent}}
```

The output of the above code will be:

```
25%
```

Overall, the Decimal Pipe is a powerful tool that allows you to easily format numbers with decimal points in your Angular app. It provides a flexible and customizable way to control the display of decimal numbers, making your app more user-friendly and easier to use.

### Example 3: Percent Pipe

The percent pipe is another useful number pipe in Angular that can handle conversions from numbers to percentages. This feature is especially useful in financial applications that require displaying percentages such as interest rates, tax rates, or discounts. The percent pipe takes a fraction and multiplies it by 100 to convert it into a percentage.

In Angular, the percent pipe is represented by the keyword "percent". It takes an optional parameter that specifies the number of decimal places to round the result to. For instance, if you want to display the percentage with two decimal places, you can use the syntax {{num | percent: '2.2-2'}}. The first parameter specifies the minimum number of integer digits, while the second parameter specifies the minimum number of fraction digits. The "2.2-2" syntax means that the integer part should have at least two digits, and the fraction part should have at least two digits with a maximum of two decimal places.

With the percent pipe, you can easily compute and display the percentage of a given value compared to a reference value. For example, if you want to display the percentage of sales increase from one month to the next, you can use the formula (new_sales – old_sales) / old_sales and apply the percent pipe to the result. Another use case is to display the percentage of a progress bar. You can use the formula (current_value / max_value) and apply the percent pipe to the result.

Overall, the percent pipe is a convenient and powerful tool for handling percentages in Angular applications, especially those that involve financial operations, graphs, or statistics. By using the percent pipe, you can ensure that your percentages are displayed consistently and accurately, without having to perform manual conversions or computations.

### Example 4: Date Pipe

The Date Pipe in Angular is another useful pipe that helps transform dates to meet specific requirements. It accepts a date value and a date format string as inputs and outputs a formatted date.

The syntax for using the Date Pipe in Angular is as follows:

```
{{dateValue | date: 'date format'}}
```

Here, the `dateValue`

is the input date, and `date format`

is the format string that defines how the date should be displayed.

The Date Pipe provides a range of formatting options to create customized date formats. Some of the commonly used date formats are:

`shortDate`

– Display the date in short format (MM/DD/YYYY).`mediumDate`

– Display the date in medium format (MMM DD, YYYY).`longDate`

– Display the date in long format (MMMM DD, YYYY).`fullDate`

– Display the date in full format (EEEE, MMMM DD, YYYY).

Additionally, the Date Pipe also allows you to define custom date formats by combining various formatting options. For example, `dd-MM-yyyy`

will display the date in the format of day-month-year.

Overall, the Date Pipe is a handy tool when working with dates in Angular applications, making it easy to format them in a way that suits specific needs.

### Example 5: Exponential Strength Pipe

The Exponential Strength Pipe is a powerful number pipe that enhances your Angular App with exponential functionality. This pipe is used to calculate exponential values of a given number with a specified exponent. The syntax for this pipe is as follows: {{value | exponential:exponent}}

This pipe takes two parameters, value and exponent, where value is the number to be calculated and exponent is the power of the exponential value. The result of this pipe is the exponential value of the input number raised to the power of the input exponent.

For example, if we have a value of 2 and an exponent of 3, the exponential value will be 8 (2^3 = 8). Similarly, if we have a value of 5 and an exponent of 2, the exponential value will be 25 (5^2 = 25).

The Exponential Strength Pipe is particularly useful in scientific and engineering applications where large numbers need to be calculated quickly and accurately. It eliminates the need for tedious manual calculations and provides results with high precision.

In addition, the Exponential Strength Pipe can be customized to display the output in a specific format depending on the requirements of the application. This allows developers to fine-tune the pipe to suit their specific needs and improve the user experience of their application.

Overall, the Exponential Strength Pipe is an essential tool for any developer working with complex numerical data in Angular Apps. Its ability to calculate exponential values quickly and accurately makes it a valuable addition to any developer's toolset.

### Conclusion

In , Angular's number pipes are an incredibly useful tool for developers looking to enhance their applications. Whether it's formatting currency or displaying percentages, number pipes offer a simple and efficient solution for displaying numerical data in a clear and concise manner. With a variety of built-in pipes available, developers can easily customize their applications to meet their specific needs and preferences.

Furthermore, the Angular framework is constantly evolving, and the development of Angular 13 promises even more enhancements and features to further streamline the development process. As more developers turn to Angular for building their applications, it's clear that number pipes will continue to play a crucial role in ensuring the efficiency and effectiveness of these projects.

In the end, the use of Angular's number pipes can greatly enhance the user experience of an application by providing clear and concise data visualizations. Developers can take advantage of these tools to make their projects more user-friendly and engaging while also saving time and effort in the development process.