edit form in angular 8
<div class="row">
<div class="col-md-6 login-container">
<h2 style="margin: auto">Login </h2>
<form [formGroup]="loginForm" (ngSubmit)="onSubmit()">
<div class="form-group">
<label for="username">UserName:</label>
<input type="text" class="form-control" formControlName="username" id="username" autocomplete="off">
<div class="error" *ngIf="loginForm.controls['username'].hasError('required') && loginForm.controls['username'].touched">Username is required</div>
</div>
<div class="form-group">
<label for="pwd">Password:</label>
<input type="password" class="form-control" formControlName="password" id="pwd" autocomplete="off">
<div class="error" *ngIf="loginForm.controls['password'].hasError('required') && loginForm.controls['password'].touched">Password is required</div>
</div>
<button class="btn btn-success" [disabled]="loginForm.invalid">Login</button>
<div *ngIf="invalidLogin" class="error">
<div>Invalid credentials.</div>
</div>
</form>
</div>
</div>
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