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Now, let's see post of angular validation for url with reactive form. i explained simply about url validation in angular. if you want to see example of url pattern validation in angular 8 then you are a right place. let’s discuss about url validation regex angular. follow bellow step for pattern for url validation in angular.

You can use url validation pattern in angular 6, angular 7, angular 8, angular 9, angular 10, angular 11, angular 12, angular 13, angular 14, angular 15, angular 16 and angular 17 application.

I will give you full example of how to implement validation for url regex pattern in angular application. textbox should accept only url in angular using reactive form. you can also see bellow preview for validation.

Solution:

const reg = '(https?://)?([\\da-z.-]+)\\.([a-z.]{2,6})[/\\w .-]*/?';
  
this.form = fb.group({
  url: ['', [Validators.required, Validators.pattern(reg)]]
})

Example:

src/app/app.component.html

<div class="container">
    <h1>URL Validation in Angular - ItSolutionStuff.com</h1>
        
    <form [formGroup]="form" (ngSubmit)="submit()">
           
        <div class="form-group">
            <label for="url">URL</label>
            <input 
                formControlName="url"
                id="url" 
                type="text" 
                class="form-control">
            <div *ngIf="f.url.touched && f.url.invalid" class="alert alert-danger">
                <div *ngIf="f.url.errors.required">URL is required.</div>
                <div *ngIf="f.url.errors.pattern">Please enter valid url.</div>
            </div>
        </div>
       
        <button class="btn btn-primary" type="submit" [disabled]="!form.valid">Submit</button>
    </form>
</div>

src/app/app.component.ts

import { Component } from '@angular/core';
import { FormBuilder, FormGroup, FormControl, Validators} from '@angular/forms';
    
@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent {
  form: FormGroup = new FormGroup({});
   
  constructor(private fb: FormBuilder) {
    const reg = '(https?://)?([\\da-z.-]+)\\.([a-z.]{2,6})[/\\w .-]*/?';
    this.form = fb.group({
      url: ['', [Validators.required, Validators.pattern(reg)]]
    })
  }
    
  get f(){
    return this.form.controls;
  }
   
  submit(){
    console.log(this.form.value);
  }
   
}

I hope it can help you...