How do I check form validity with AngularJS?

ng-pristine No fields has not been modified yet

ng-dirty One or more fields has been modified

ng-valid The form content is valid

ng-invalid The form content is not valid

ng-valid- key One key for each validation. Example: ng-valid-required,useful when there are more than one thing that must be validated

ng-invalid- key Example: ng-invalid-required

How to validate form using angular form validators?

Validating input in template-driven forms link.

Validating input in reactive forms link.

Defining custom validators link.

Control status CSS classes link.

Cross-field validation link.

Creating asynchronous validators link.

Interaction with native HTML form validation link.

How can I validate checkbox in AngularJS?

AngularJS CheckBoxes.

Example of AngularJS CheckBoxes.

Output of AngularJS CheckBoxes Example.

AngularJS Bind Array List to CheckBoxes.

Output of AngularJS Bind Array List to CheckBoxes.

AngularJS Show/Hide Elements with CheckBox.

Output of AngularJS Show/Hide Elements with CheckBox.

AngularJS Check If CheckBox Checked/Unchecked.

How to create custom validator directives with AngularJS?

Username. Since required,minlength,maxlength are built-in validators,it’s so easy to use them.

Email. We set the email to required,then use the built-in pattern validator to test the value with email regex:^[a-zA-Z0–9_.+-]+@[a-zA-Z0–9-]+.

Password and Confirm Password. Password: required,value must be equal to confirm password.

How to create a custom input validator with AngularJS?

– Using Validators. Angular provides us many useful validators, including required, minLength, maxLength, and pattern. – Custom Validators. Let us say you want the age range to be from 18 to 45. – Passing Parameters to a Custom Validator. An Angular custom validator does not directly take extra input parameters aside from the reference of the control.

How can I validate Keyup function in AngularJS?

– create an input element which will take input. – In that input element call the user-defined function on (keyup) event by passing $event. – Take that $event to user-defined function in TypeScript file and take value from event variable by event.target.value and add that to local variable to see synchronous changes on keystroke.