How can I use built-in validators in Angular forms?
An example of an AI chatbot conversation about Angular CLI forms and built-in validators.
How can I use built-in validators in Angular forms?
You can use Angular's built-in validators like required, minLength, and maxLength by importing ReactiveFormsModule and applying them in your form controls.
Can you show me an example of using the required validator?
Sure! In your form group, you can define a control like this: this.form = this.fb.group({ name: ['', Validators.required] }); This makes the 'name' field required.
What happens if the validation fails?
If validation fails, the form control will be marked as invalid, and you can display error messages based on the validation state.
How do I display error messages in the template?
You can use *ngIf to conditionally display error messages. For example: <div *ngIf="form.get('name').invalid && form.get('name').touched">Name is required.</div>
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