Question:How to validate data in AngularJS? 

Answer AngularJS enriches form filling and validation. We can use $dirty and $invalid flags to do the validations in seamless way. Use novalidate with a form declaration to disable any browser specific validation.

Following can be used to track error.

$dirty − states that value has been changed.

$invalid − states that value entered is invalid.

$error − states the exact error. 

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