Sunday, September 20, 2020
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Angular 9Bootstrap 4

How to validate angular 9 input phone number?

How to validate angular 9 input phone number ?

Hello to all, welcome to therichpost.com. In this post, I will tell you, How to validate angular 9 input phone number?

How to validate angular 9 input phone number ?
How to validate angular 9 input phone number ?

Post Working:

In this post, I am showing How to validate angular 9 input phone number? I also used Bootstrap 4 CDN for good looks of layout.

Here is the working coding steps and please follow carefully:

1. Here are the basics commands to install angular 9 on your system:

npm install -g @angular/cli 

ng new angularpopup //Create new Angular Project

cd angularpopup // Go inside the Angular Project Folder

ng serve --open // Run and Open the Angular Project

http://localhost:4200/ // Working Angular Project Url

 

2. Here is the below command you need to run into your terminal to add intl tel input into your angular 9 application:

npm install ng2-tel-input intl-tel-input --save

 

3. Now you need to add below code into your angular.json file:

...
"styles": ["node_modules/intl-tel-input/build/css/intlTelInput.css"],
"scripts": ["node_modules/intl-tel-input/build/js/intlTelInput.min.js"]
...

 

4. Now you need to add below code into your src/app/app.module.ts file:

...
import {Ng2TelInputModule} from 'ng2-tel-input';
import {FormsModule, ReactiveFormsModule} from '@angular/forms';
...

imports: [...  Ng2TelInputModule, FormsModule, ReactiveFormsModule ...]

 

 

5. Now you need to add below code into your src/app/app.component.html file:

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css">

<div class="container">
  <h3 class="text-center mt-5 mb-5">Angular 9 input phone number with country code with validation working example</h3>
  
<form [formGroup]="registerForm" (ngSubmit)="onSubmit()">

  <div class="form-group">
    <label for="phone">Phone Number:</label> <br>
    <input placeholder="1231231230" ng2TelInput (keypress)="numericOnly($event)" type="text" formControlName="phone" class="form-control" [ngClass]="{ 'is-invalid': submitted && f.phone.errors }" />
    <div *ngIf="submitted && f.phone.errors" class="invalid-feedback">
      <div *ngIf="f.phone.errors.required">Phone is required</div>
      <div *ngIf="f.phone.errors.minlength">Phone must be at least 10 numbers.</div>
    </div>
  </div>
  
  <button type="submit" class="btn btn-primary">Submit</button>
</form>
</div>

 

 

6. Here is the code for app.component.css file:

.invalid-feedback{display:block;}

 

7. Here is the code for app.component.ts file:

import { Component, OnInit } from '@angular/core';
import { FormBuilder, FormGroup, Validators } from '@angular/forms';
@Component({
  selector: 'app-inputtell',
  templateUrl: './inputtell.component.html',
  styleUrls: ['./inputtell.component.css']
})
export class AppComponent implements OnInit {

  registerForm: FormGroup;
  submitted = false;
  constructor(private formBuilder: FormBuilder) { }
  numericOnly(event) {    
    let patt = /^([0-9])$/;
    let result = patt.test(event.key);
    return result;
  }
  ngOnInit(): void {
  
  this.registerForm = this.formBuilder.group({
        phone: ['', [Validators.required, Validators.minLength(10)]]
    });
  }
  get f() { return this.registerForm.controls; }
  onSubmit() {
    this.submitted = true;
    // stop here if form is invalid
    if (this.registerForm.invalid) {
      return;
    }
     
  }

}

 

This is it and if you have any query related this post then please let me know.

Jassa

Thank you

Ajay Malhotra
the authorAjay Malhotra
Hello to all. Welcome to therichpost.com. Myself Ajay Malhotra and I am freelance full stack developer. I love coding. I know Wordpress, Core php, Angularjs, Angular 2, Angular 6, Angular 7, Angular 8, Angular 9, Angular 10 Nodejs, laravel, Codeigniter, Shopify, Squarespace, Jquery, Google Map Api, Vuejs, Reactjs, Bigcommerce etc.

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