Key Functions of Validators Class
The Validators class provides several static methods that return validation functions. These validation functions can be used to validate form controls based on different criteria, such as required fields, minimum and maximum values, pattern matching, and more.
Some of the commonly used validation functions provided by the Validators class include:
- required: Validates that the control value is not null or an empty string.
- minLength: Validates that the control value has a minimum length.
- maxLength: Validates that the control value does not exceed a maximum length.
- pattern: Validates that the control value matches a regular expression pattern.
- email: Validates that the control value is a valid email address.
- min: Validates that the control value is greater than or equal to a specified minimum value.
- max: Validates that the control value is less than or equal to a specified maximum value.
Purpose of Validators class in Angular
The Validators class in Angular provides a set of built-in validation functions that can be used to validate form controls and user input. It is part of the @angular/forms module and is commonly used in conjunction with Angular’s Reactive Forms or Template-driven Forms.