In reactive forms, you can use built-in validator like required and minlength on your input form controls. For example, the registration form can have these validators on name input field:
1 2 3 4 5 6 | this.registrationForm = new FormGroup({ 'name': new FormControl(this.hero.name, [ Validators.required, Validators.minLength(4), ]) }); |
Whereas in template-driven forms, both required and minlength validators available as attributes.
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