What is ng minlength?
The ng-minlength directive adds a restriction to an input field, and to the validator of the form. The ng-minlength directive will add an “invalid” state of the input field if the length of the value is less than specified. Note: If the value is empty, it is considered valid.
What is Ng required?
Definition and Usage The ng-required directive sets the required attribute of a form field (input or textarea). The form field will be required if the expression inside the ng-required attribute returns true. The ng-required directive is necessary to be able to shift the value between true and false .
What is Ng pattern in AngularJS?
The ng-pattern Directive in AngularJS is used to add up pattern (regex pattern) validator to ngModel on input HTML element. It is used to set the pattern validation error key if input field data does not match a RegExp that is found by evaluating the Angular expression specified in the ngpattern attribute value.
What is Ng checked?
Definition and Usage. The ng-checked directive sets the checked attribute of a checkbox or a radiobutton. The checkbox, or radiobutton, will be checked if the expression inside the ng-checked attribute returns true. The ng-checked directive is necessary to be able to shift the value between true and false .
What is NG model?
ngModel is a directive which binds input, select and textarea, and stores the required user value in a variable and we can use that variable whenever we require that value. It also is used during validations in a form. We can use ngModel with: input. text.
What is dirty in angular?
dirty: This property returns true if the element’s contents have been changed. untouched: This property returns true if the user has not visited the element.
What is Ng change in angular?
AngularJS ng-change Directive The ng-change event is triggered at every change in the value. It will not wait until all changes are made, or when the input field loses focus. The ng-change event is only triggered if there is a actual change in the input value, and not if the change was made from a JavaScript.
What is [( ngModel )]?