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Mastering Angular Date Pipe: Custom Formats & Country Locale Standards

Angular Date Pipe and Its Parameters

Have you ever noticed that dates and times are a crucial part of web applications? As a developer, it is important to know how to format date and time in a way that is visually appealing and easy to read.

The Angular Date Pipe is a powerful tool that allows developers to display dates in different formats, time zones, and locales. In this article, we will explore the syntax of Angular Date Pipe, its parameters, and the predefined date formats available in Angular.

Syntax of Angular Date Pipe

The Angular Date Pipe provides a simple and intuitive way to format dates in Angular. We can use it in our templates to display dates in a way that makes sense to our users.

The syntax of the Angular Date Pipe is as follows:

{{ date_expression | date [ : format [ : timezone [ : locale ] ] ] }}

– date_expression: This is the expression that evaluates to the date that we want to format. – format: This is an optional parameter that specifies the format of the date.

If omitted, it will use the default format. – timezone: This is an optional parameter that specifies the time zone of the date.

If omitted, it will use the local time zone of the user’s browser. – locale: This is an optional parameter that specifies the locale of the date.

If omitted, it will use the default locale of the application.

Parameters of Angular Date Pipe

Let’s take a closer look at each parameter of the Angular Date Pipe. Format:

The format parameter allows us to display the date in a specific format.

We can use pre-defined format strings or define our custom format. For example, the following code formats the date as “MMM d, y, h:mm a” (e.g. Oct 7, 2021, 2:30 PM):

{{ date_expression | date:’MMM d, y, h:mm a’ }}

TimeZone:

The timezone parameter allows us to display the date in a specific time zone.

We can use any valid time zone identifier. For example, the following code formats the date as “MMM d, y, h:mm a” in the “America/New_York” timezone:

{{ date_expression | date:’MMM d, y, h:mm a’:’America/New_York’ }}

Locale:

The locale parameter allows us to display the date in a specific locale.

We can use any valid locale identifier. For example, the following code formats the date as “MMM d, y, h:mm a” in French (Canadian) locale:

{{ date_expression | date:’MMM d, y, h:mm a’:undefined:’fr-CA’ }}

Predefined date formats in Angular

Angular provides a variety of predefined date formats that we can use in our templates. Here are some of the most commonly used pre-defined formats:

{{ date_expression | date:’short’ }}: formats the date as “M/d/yy, h:mm a” (e.g. 10/7/21, 2:30 PM)

{{ date_expression | date:’medium’ }}: formats the date as “MMM d, y, h:mm:ss a” (e.g. Oct 7, 2021, 2:30:00 PM)

{{ date_expression | date:’long’ }}: formats the date as “MMMM d, y, h:mm:ss a z” (e.g. October 7, 2021, 2:30:00 PM EDT)

{{ date_expression | date:’full’ }}: formats the date as “EEEE, MMMM d, y, h:mm:ss a zzzz” (e.g. Thursday, October 7, 2021, 2:30:00 PM Eastern Daylight Time)

Time Zone Example

Now, let’s see how we can use the Angular Date Pipe to display a date in a specific timezone. Suppose we have a date in GMT timezone:

const date = new Date(Date.UTC(2021, 9, 7, 14, 30, 0));

We want to display this date in the “America/Los_Angeles” timezone.

We can use the following code in our template:

{{ date | date:’MMM d, y, h:mm a’:’America/Los_Angeles’ }}

This code will display the date in the “MMM d, y, h:mm a” format in the “America/Los_Angeles” timezone.

Conclusion

In this article, we have explored the Angular Date Pipe and its parameters. We have seen how to use the Angular Date Pipe to format dates in different formats, time zones, and locales.

We have also seen some of the most commonly used pre-defined date formats in Angular. By using the Angular Date Pipe, we can display dates in a way that is visually appealing and easy to read.

With this knowledge, we can enhance the user experience of our applications and make them more user-friendly for our end-users.

3) Angular Date Pipe with Country Location

In an increasingly globalized world, it is common for web applications to cater to users from different countries. These users may have different date format preferences based on their location and cultural conventions.

For example, in the United States, it is common to display dates in the format “mm/dd/yyyy”, while in Europe, the format is “dd/mm/yyyy”. The Angular Date Pipe provides us with the ability to display dates according to the country’s locale format standard.

In this section, we will explore how to use the Angular Date Pipe with country location.

Displaying date according to country locale format standards

The Angular Date Pipe can detect the user’s browser locale and display the date accordingly. We can also manually set the locale to display the date in a particular format.

For example, if we want to display the date in the German locale format, we can use the following code in our template:

“`{{ date_expression | date:’short’:undefined:’de’ }}“`

This will format the date in the German locale format, “dd.mm.yyyy”. Similarly, we can display the date in different locale formats by passing the appropriate locale identifier.

4) Custom Date Pipe in Angular

While the Angular Date Pipe provides us with several pre-defined formats, there may be instances where we need to display the date in a custom format. The good news is that we can create our custom date format using a Custom Date Pipe.

In this section, we will explore creating a Custom Date Pipe in Angular, the steps involved, and provide an example of a custom date format.

Creating a custom date format using Date Pipe

We can create a Custom Date Pipe in Angular by extending the built-in Date Pipe. Here are the steps involved in creating a Custom Date Pipe:

Step 1: Import the Date Pipe and Pipe Transformer from the @angular/core module.

“`import { Pipe, PipeTransform } from ‘@angular/core’;“`

Step 2: Decorate the Class with @Pipe decorator to make it a Pipe. “`@Pipe({ name: ‘customDate’ })“`

The name property is used to identify the pipe in the template.

Step 3: Implement the PipeTransform interface that requires a transform method. “`

transform(value: any, formatString: string): string {

if (value) {

const date = new Date(value)

const suffix = this.getSuffix(date.getDate());

const formattedDate = formatString

.replace(/yyyy/g, date.getFullYear().toString())

.replace(/MM/g, (date.getMonth()+1).toString())

.replace(/dd/g, date.getDate().toString())

.replace(/ss/g, date.getSeconds().toString())

.replace(/mm/g, date.getMinutes().toString())

.replace(/hh/g, date.getHours().toString())

.replace(/d/g, date.getDate().toString())

.replace(/s/g, suffix);

return formattedDate;

}

return ”;

}

“`

In this example, the transform method takes two parameters – the date value and the format string.

Inside the method, we are using a regular expression to replace placeholders in the format string with the corresponding date and time properties. Step 4: Import and use Custom Date Pipe in our component.

“`import { CustomDatePipe } from ‘../pipes/custom-date.pipe’;“`

“`{{ date_expression | customDate: ‘dd/MM/yyyy hh:mm:ss s’ }}“`

This will format the date in the “dd/MM/yyyy hh:mm:ss Suffix” custom date format.

Example of a custom date format

Let’s take a look at an example of a custom date format that we can create using the Custom Date Pipe in Angular. “`

@Pipe({ name: ‘customDate’ })

export class CustomDatePipe implements PipeTransform {

transform(value: any, formatString: string): string {

if (value) {

const date = new Date(value)

const suffix = this.getSuffix(date.getDate());

const formattedDate = formatString

.replace(/yyyy/g, date.getFullYear().toString())

.replace(/MM/g, (date.getMonth()+1).toString())

.replace(/dd/g, date.getDate().toString())

.replace(/ss/g, date.getSeconds().toString())

.replace(/mm/g, date.getMinutes().toString())

.replace(/hh/g, date.getHours().toString())

.replace(/d/g, date.getDate().toString())

.replace(/s/g, suffix);

return formattedDate;

}

return ”;

}

private getSuffix(date: number): string {

if (date > 3 && date < 21) return 'th';

switch (date % 10) {

case 1: return “st”;

case 2: return “nd”;

case 3: return “rd”;

default: return “th”;

}

}

}

“`

In this example, we have created a custom date format that displays the date in the “dd/MM/yyyy hh:mm:ss Suffix” format.

The suffix is “st” for the 1st, “nd” for the 2nd, “rd” for the 3rd, and “th” for the remaining days of the month.

In conclusion, we have learned how to display dates according to country locale format standards and create a custom date format using a Custom Date Pipe in Angular.

Custom Date Pipes give us the flexibility to display the date in a format that makes sense to the application’s users. With this knowledge, we can enhance the user experience of our applications further.

5) Custom Date Formats in Angular

Angular provides a wide range of pre-defined date formats that we can use in our templates. However, there may be instances where we need to display dates in a custom format that is not available in the pre-defined list.

In such situations, we can use the Angular Custom Date Pipe to create our own custom format. In this section, we will provide a comprehensive list of all possible custom date formats in Angular.

Angular supports a wide range of custom date format options. The following table summarizes the various options that we can use to customize the date format:

| Format | Description |

| —— | ———– |

| yyyy | Four-digit year |

| yy | Two-digit year |

| M | Month number without leading zeros |

| MM | Month number with leading zeros |

| MMM | Three-letter month abbreviation (e.g. Jan, Feb, Mar, etc.) |

| MMMM | Full month name (e.g. January, February, March, etc.) |

| d | Day of the month without leading zeros |

| dd | Day of the month with leading zeros |

| EEE | Three-letter day of the week abbreviation (e.g. Mon, Tue, Wed, etc.) |

| EEEE | Full day of the week name (e.g. Monday, Tuesday, Wednesday, etc.) |

| H | Hour in 24-hour format without leading zeros (e.g. 0, 1, 2, etc.) |

| HH | Hour in 24-hour format with leading zeros (e.g. 00, 01, 02, etc.) |

| h | Hour in 12-hour format without leading zeros (e.g. 1, 2, 3, etc.) |

| hh | Hour in 12-hour format with leading zeros (e.g. 01, 02, 03, etc.) |

| m | Minute without leading zeros |

| mm | Minute with leading zeros |

| s | Second without leading zeros |

| ss | Second with leading zeros |

| S | Milliseconds (e.g. 0, 1, 2, etc.) |

| SS | Milliseconds with leading zero (e.g. 00, 01, 02, etc.) |

| SSS | Millisecond with leading zeros (e.g. 000, 001, 002, etc.) |

| a | AM or PM |

| Z | Time zone offset in hours and minutes (e.g. -0600) |

| z | Time zone name or abbreviation (e.g. CST, EDT, etc.) |

Now that we have a list of all possible custom date formats in Angular, let’s take a look at some examples.

Example 1: Displaying the date and time in “MM-dd-yyyy HH:mm” format

To create this custom date format, we can use the following code in our template:

“`{{ date_expression | date: ‘MM-dd-yyyy HH:mm’ }}“`

This will format the date and time in the “MM-dd-yyyy HH:mm” format. Example 2: Displaying the date in “MMM dd, yyyy” format

To create this custom date format, we can use the following code in our template:

“`{{ date_expression | date: ‘MMM dd, yyyy’ }}“`

This will format the date in the “MMM dd, yyyy” format.

Example 3: Displaying the date and time in “EEEE, MMMM d, yyyy h:mm:ss a” format

To create this custom date format, we can use the following code in our template:

“`{{ date_expression | date: ‘EEEE, MMMM d, yyyy h:mm:ss a’ }}“`

This will format the date and time in the “EEEE, MMMM d, yyyy h:mm:ss a” format. Example 4: Displaying the date in “yyyy.MM.dd G ‘at’ HH:mm:ss z” format

To create this custom date format, we can use the following code in our template:

“`{{ date_expression | date: “yyyy.MM.dd G ‘at’ HH:mm:ss z”}}“`

This will format the date in the “yyyy.MM.dd G ‘at’ HH:mm:ss z” format.

These are just a few examples of the custom date formats that we can create using the Angular Custom Date Pipe. By using a custom date format, we can display dates in a way that makes sense to our users.

With the flexibility provided by the Angular Custom Date Pipe, we can create a custom format that meets our application’s specific needs. In conclusion, we have explored a comprehensive list of all possible custom date formats in Angular.

With this knowledge, we can enhance the user experience of our applications by displaying dates in a format that makes sense to our users. The customization options provided by Angular give us the power to create a custom date format that meets our application’s specific requirements.

In summary, the article explored various aspects of the Angular Date Pipe, including its syntax, parameters, predefined date formats, displaying dates according to country locale format standards, and creating custom date formats. We have discussed how the Angular Date Pipe can enhance user experience by making date and time display visually appealing and easy to read.

Custom date formats provide the flexibility of displaying dates that meet the application’s specific needs. The takeaway is that Angular developers must understand how to effectively use the Angular Date Pipe to improve user experience by selecting a suitable date and time format to display information.

As a result, it is beneficial to learn and use the provided options to achieve the best results.

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