p.location-badge.
exported from <a href='../forms'>angular2/forms</a>
defined in <a href="https://github.com/angular/angular/tree/2.0.0-alpha.33/modules/angular2/src/forms/validators.ts#L4-L61">angular2/src/forms/validators.ts (line 4)</a>
:markdown
Provides a set of validators used by form controls.
# Example
```
var loginControl = new Control("", Validators.required)
