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Angular Focusout Event on Input Example

Angular Focusout Event on Input Example

Aman Jain, September 24, 2022March 16, 2024

Angular Focusout Event on Input is an Angular event binding it triggers when user interacts with DOM like text based input element and focus get out from the element. Input events in angular can be handled using input and output decorators and in this tutorial we will learn Angular FocusOut Event on Input with Example. In core javascript we use onfocusout event to handle the focus in and out events of input but in angular it there is different way to handle the input events like for focus event we use @output decorator to input element and to handle the event of key up we use (focusout) attribute.

Angular is most popular frontend framework and it has its on guidelines to handle events, forms, focus ,rendering etc. In this example we will implement a Simple focusout Event and then we will handle it in typescript component file.

this example of (focusout) in angular will work in all angular version including angular 2, angular 6, angular 7, angular 8, angular 9, angular 10, angular 11, angular 12, angular 13 and angular 14 application.

Simplest way to use focusout is as follow

<input (focus)="focusOut($event)" 
    type="text" 
    placeholder="Enter new PIN" 
/> 
focusOut(event:any) { 
  alert("Focus Out");
}

Here we simply assigned the (focusout) to input element and then handled the event in component as above.

Let’s take an example of it

Step 1 : Create an angular app

First step is to setup an angular app using below command

ng new example-app

Step 2: Create a Component

Create a component and a method

ng g c hello-world
import { Component, OnInit } from '@angular/core';
import { ActivatedRoute } from '@angular/router';

@Component({
  selector: 'app-hello-world',
  templateUrl: './hello-world.component.html',
  styleUrls: ['./hello-world.component.css'],
})
export class HelloWorldComponent implements OnInit {
  
  constructor() {
  }
  focusOut(event:any) {
    alert("Focus Out");
  }
  ngOnInit() {}
}

Here we used to focusOut method to handle the input

Step 3 : Create template and add html

Now, add simple html template with input field

<h2>Angular focusout Event on Input Example</h2>

<input (focus)="focusOut($event)" 
    type="text" 
    placeholder="Enter new PIN" 
/> 

Live Example:

Related

Javascript Angular angulareventfocusout

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Aman Jain
Aman Jain

With years of hands-on experience in the realm of web and mobile development, they have honed their skills in various technologies, including Laravel, PHP CodeIgniter, mobile app development, web app development, Flutter, React, JavaScript, Angular, Devops and so much more. Their proficiency extends to building robust REST APIs, AWS Code scaling, and optimization, ensuring that your applications run seamlessly on the cloud.

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