Untitled

<div [hidden]="submitted">
    <h1>Login Form</h1>
    <form *ngIf="!active" (ngSubmit)="onSubmit()" #loginForm="ngForm">
        <div class="form-group">
            <label for="username">Login</label>
            <input type="text" class="form-control" id="username" name="username"
                   placeholder="Login" required
                   [(ngModel)]="credentials.username">
        </div>
        <div class="form-group">
            <label>Password</label>
            <input type="password" class="form-control" id="password" name="password"
                   placeholder="Password"
                   [(ngModel)]="credentials.password">
        </div>
        <button type="submit" class="btn btn-default" [disabled]="!loginForm.form.valid">Submit</button>
    </form>
</div>