How to use UpperCase and LowerCase Pipes in Angular?

 Here's an example of how to use the UpperCasePipe and LowerCasePipe in Angular:

1. First, import the UpperCasePipe and LowerCasePipe from the @angular/common module:

import { UpperCasePipe, LowerCasePipe } from '@angular/common';

2. Inject the UpperCasePipe and LowerCasePipe into your component's constructor:

constructor(private upperCasePipe: UpperCasePipe, private lowerCasePipe: LowerCasePipe) { }

3. Use the transform() method of the UpperCasePipe or LowerCasePipe to convert a string to uppercase or lowercase in your component's template:

<p>The uppercase version of "hello world" is "{{ 'hello world' | uppercase }}"</p>
<p>The lowercase version of "HELLO WORLD" is "{{ 'HELLO WORLD' | lowercase }}"</p>

In these examples, the uppercase and lowercase pipes are used to transform the input strings to uppercase and lowercase, respectively. The resulting output will look something like this:

The uppercase version of "hello world" is "HELLO WORLD"
The lowercase version of "HELLO WORLD" is "hello world"

You can use these pipes with any string value in your templates to convert it to uppercase or lowercase as needed.