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Learn how to build custom validation in template-driven forms. In Angular, we have two API to build Angular Forms. They are Reactive Forms and template-driven forms. In Template-driven forms, we define validation rule as an HTML attribute in the HTML markup. The Angular provides a few built-in Validation attributes out of the box. In this tutorial, we will talk about how to build a custom validation attribute using Angular Directive. We also show you how to pass a parameter & how to inject service into the validation attribute.

Learn how to inject service into Validator in Angular. The validator may depend on some external service to do its validation. For Example, it may need to fetch data from the back end server to validate the value.

Custom Validator in Reactive Forms Inject Service to Validator   Learn how to create a custom validator with parameters in Angular Reactive Forms. This is the continuation of our previous tutorial, where we learned how to build a custom validator in Reactive forms. Custom Validator with Parameter Here is the code of greater than validator […]

Learn how to build a custom validator in Angular Reactive form. A data entry form can contain a large no of fields. The Angular forms module makes it easier to create, manage, and validate the form fields. There are two ways in which you can create forms in Angular. One is Reactive forms & the other one is template-driven forms. Learn how to create reactive forms & how to create template-driven forms.

In this tutorial, we will show you how to set up an Angular Environment Variables for the various environments. First, we will learn where Angular keeps its environment Variable. Next, we will create the environment variable. We then assign different values to this environment variable based on the environment. Finally, we read these values in Angular Application. We also learn how to add a new test environment.