A client wants certain fields in a form to be auto-populated based on the value of another field. How would you achieve this in Angular?
- Implementing custom validation for auto-population
- Using pipes to manipulate the form data
- Using reactive forms with value changes observables
- Using template-driven forms with ngModel
To auto-populate fields based on another field's value, you'd typically use reactive forms in Angular along with valueChanges observables. This allows you to reactively update form fields based on changes in other fields. While template-driven forms with ngModel can achieve some level of auto-population, reactive forms provide more control and flexibility. Using pipes or custom validation may not be the most suitable approach for this requirement.
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