To implement validations containing one or more sibling controls, we need to define the validation function at a higher level than the sibling controls.

codeHeader

Then, we define a custom validator in a separate file, for example 

If invalid, return an error object (with any arbitrary name), such as 

 for valid or irrelevant cases, and a non-null object in cases where an error should be triggered on the 

To display the error in our view, we use the 

How to validate two form fields by comparing them?

Let's verify multiple fields with a high-level validator!

Comparing Multiple Fields

How to validate two form fields by comparing them? Let's verify multiple fields with a high-level validator!

Angular Form Validation: Comparing Multiple Fields

Comparing Multiple Fields with Angular

Our online magazine presents new generation 

design, SEO and SEM, marketing, development, optimization ...

Subscribe via email or follow us on social networks to stay tuned about web news.

Digital news

Online magazine to learn the Web, find resources, browse trends and enjoy a hot coffee