Web Reference: AngularJS offers client-side form validation. AngularJS monitors the state of the form and input fields (input, textarea, select), and lets you notify the user about the current state. AngularJS also holds information about whether they have been touched, or modified, or not. I'm very new to angularjs. Say my app has a form. Using the inspector, I noticed that if angularjs thinks that the form is invalid, it adds an ng-invalid class to the form. Lovely. So it seems tha... Form and controls provide validation services, so that the user can be notified of invalid input before submitting a form. This provides a better user experience than server-side validation alone because the user gets instant feedback on how to correct the error.
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