By creating dynamic dependent dropdown the user is restricted to select an item to view data on another dropdown element.
Based on each selection data is changed in the dropdown.
The common example of this – country and state element in the form. According to the selected country state is been auto-populated.
I am using $http service in AngularJS to send a request to fetch records from MySQL database with PHP.
In the demonstration, I am creating two dropdowns – state and users. According to the state selected from the first dropdown auto-populate users list in the second dropdown.