What are some effective strategies for UI validation in Angular forms?

What are some effective strategies for UI validation in Angular forms?

There are several strategies for UI validation in Angular forms, including reactive forms, template-driven forms, and custom validators. Would you like to know more about a specific strategy?

Can you explain reactive forms and how they handle validation?

Reactive forms in Angular provide a model-driven approach to handling form inputs. They allow you to define the form structure in the component class, making it easier to manage validation and state. You can use built-in validators or create custom ones.

What are some common built-in validators in Angular?

Common built-in validators in Angular include required, minLength, maxLength, and pattern. These can be easily applied to form controls to enforce validation rules.

How can I create a custom validator for a form control?

To create a custom validator, you can define a function that takes a form control as an argument and returns either null if valid or an error object if invalid. You then use this function in your form control definition.