Domain Name Validation In Angular. Also in order for a validator to be useful we must register it in one of the validators or asyncValidators objects. NgModel Properties for Validation.
AngularJS monitors the state of the form and input fields input textarea select and lets you notify the user about the current state. Validation rules are case-sensitive. Pretty ambitious goals but with the breadth of knowledge the team has from building Angular 1x I think Angular 2 forms can live up to these expectations.
Right click Constraint Folder add New Constraint.
Requirement - Required and only alphabets allowed in the name field. The advantage of having this function in a provider rather than building it directly into the validator is that now I can reuse this in other parts of the application if I want. I have a love-hate relationship with regular expressions because they are great for efficient pattern matching but their black magic syntax make them hard to read and write. NgModel in the directive return object as in the examples above.