What are performance async validators?
An example of an AI chatbot conversation about performance async validators in programming.
Can you explain what performance async validators are?
Performance async validators are functions that validate data asynchronously, often used in forms to check input validity without blocking the UI.
How do they improve user experience in web applications?
They allow for real-time validation, providing instant feedback to users, which helps in correcting errors before form submission.
Can you give me an example of how to implement one?
Sure! In Angular, you can create an async validator by returning an observable that emits either null (valid) or an error object (invalid).
What are some common use cases for async validators?
Common use cases include checking if a username is already taken or validating email formats against a database.
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