Introduction
In this tutorial, we will build an Employee Management System using Angular. This exercise demonstrates essential Angular concepts, including Angular Components, Data Binding, Interpolation, Property Binding, Event Binding, Two-way Data Binding, and Child/Nested Components.
Objective
Create an Employee Management System that allows you to manage a list of employees, demonstrating key Angular concepts.
Requirements
1. Main Application Component
- Set up a new Angular project.
- Create the main application component.
2. Employee List Component
- Create `EmployeeListComponent` to display a list of employees.
- Use interpolation to display employee names and other details.
- Use property binding to dynamically set CSS classes based on employee properties (e.g., highlight employees with more than 5 years of experience).
3. Employee Detail Component
- Create a nested component called `EmployeeDetailComponent` to show detailed information about a selected employee.
- Use `@Input` to pass the selected employee from `EmployeeListComponent` to `EmployeeDetailComponent`.
4. Add New Employee Component
- Create `AddEmployeeComponent` to add a new employee.
- Use two-way data binding for the input fields to capture the new employee details.
- Use event binding to handle the form submission and add the new employee to the list.
5. Main Component Integration
- In the main component, use `EmployeeListComponent` to display the list of employees.
- When an employee is clicked in `EmployeeListComponent`, display the employee details in `EmployeeDetailComponent`.
- Include `AddEmployeeComponent` in the main component to allow adding new employees.
Steps
1. Setup
First, create a new Angular project using Angular CLI:
ng new EmployeeManagementSystem
cd employee-management-system
ng generate component EmployeeListComponent
ng generate component EmployeeDetailComponent
ng generate component AddEmployeeComponent
2. EmployeeListComponent
In `employee-list.component.ts`, create a list of employees:
In `employee-list.component.html`, display the employees:
3. EmployeeDetailComponent
In `employee-detail.component.ts`, create an `@Input` property to accept an employee object:
In `employee-detail.component.html`, display the employee details:
4. AddEmployeeComponent
In `add-employee.component.ts`, create a form to input employee details:
In `add-employee.component.html`, create the form:
5. Main Component
In `app.component.ts`, integrate all components:
In `app.component.html`, use the components:
Example Data Structure for Employees
Additional Notes
- Ensure to follow Angular best practices, such as using services for shared data if needed.
- Style the components to make the application user-friendly.
- Test the application thoroughly to ensure all data bindings and component interactions work as expected.
Screenshot
Conclusion
By completing this exercise, you have created a fully functional Employee Management System using Angular. This exercise has covered essential Angular concepts such as components, data binding, and event handling. Happy coding!
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