22 Using the forms API, part 2

In this chapter, I continue to describe the Angular forms API, explaining how to create form controls dynamically and how to create custom validation. Table 22.1 summarizes the chapter.

22.1 Preparing for this chapter

For this chapter, I will continue using the exampleApp project from chapter 21. No changes are required for this chapter.

22.2 Creating form components dynamically

22.2.1 Using a form array

22.2.2 Adding and removing form controls

22.2.3 Validating dynamically created form controls

22.2.4 Filtering the FormArray values

22.3 Creating custom form validation

22.3.1 Creating a directive for a custom validator

22.3.2 Validating across multiple fields

22.3.3 Performing validation asynchronously

22.4 Summary