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Get Which Key Pressed From Keypress Angular2

When working on web projects using Angular 2, you might come across a need to detect which key the user has pressed. This can be especially useful when building interactive applications where you want to trigger specific actions based on the keys pressed by the user. In this article, we'll explore how you can achieve this functionality in Angular 2.

**Listening to Key Press Events**

To detect key presses in Angular 2, you can make use of the `(keypress)` event binding provided by Angular. By attaching this event listener to an input field or any other element that can receive keyboard input, you can capture the key press events and extract the key that was pressed.

Here's an example of how you can listen to key press events in an Angular 2 component:

Javascript

import { Component } from '@angular/core';

@Component({
  selector: 'app-key-press',
  template: ''
})
export class KeyPressComponent {
  onKeyPress(event: KeyboardEvent) {
    console.log('Key pressed:', event.key);
  }
}

In the above code snippet, we define a simple Angular component with an input field that listens for `(keypress)` events and calls the `onKeyPress` method whenever a key is pressed. The `event` object passed to the method contains information about the key that was pressed, which we can access using the `key` property.

**Detecting the Key Pressed**

Now that we can capture key press events, let's enhance our example to display only a specific message when a particular key is pressed. We can achieve this by checking the `event.key` value and performing different actions based on the pressed key.

Javascript

import { Component } from '@angular/core';

@Component({
  selector: 'app-key-press',
  template: ''
})
export class KeyPressComponent {
  onKeyPress(event: KeyboardEvent) {
    if (event.key === 'Enter') {
      console.log('Enter key pressed!');
    } else {
      console.log('Key pressed:', event.key);
    }
  }
}

In the updated code snippet, we check if the pressed key is the Enter key and log a specific message for that case. For all other keys, we log the key itself. This demonstrates how you can differentiate between different key presses and trigger custom actions accordingly.

**Final Thoughts**

Detecting key presses in Angular 2 is a powerful feature that allows you to create dynamic and interactive user experiences. By leveraging the `(keypress)` event binding and the `event.key` property, you can easily capture key press events and respond to them in your Angular applications.

I hope you found this article helpful in understanding how to get which key is pressed in Angular 2. Happy coding!

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