Page validate not validating custom validators

"But aren't there already a ton of validation plugins out there?" Right, there are a lot of non-j Query-based solutions (which you'd avoid since you found j Query) and some j Query-based solutions.Angular really shines with async validators so that we can have a streamlined construct to handle asynchronous operations in our form validation.All around, Angular 2 improves the developer experience when working with forms, which hopefully translates to an improved end user experience as well.In this post, I will create a simple app which uses the same custom async validator to validate the uniqueness of the email field in a form which is responsible for creating and updating a customer record.

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A complete functioning code example is also available if you installed the examples with your Web Logic Server installation.It’s best practice to use the same form for creating and editing a record in Angular.If there’s a field that should be unique, say an email field, we need to validate the uniqueness of the field with a backend API.You need to place error messages in the DOM and show and hide them when appropriate.You want to react to more than just a submit event, like keyup and blur.

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