Angular: Templates and Data Binding

Introduction

Angular is a powerful framework for building dynamic web applications. This lesson focuses on two significant concepts: Templates and Data Binding, which are essential for creating interactive user interfaces.

Templates

Templates in Angular are HTML files that define the layout and structure of a component's view. Angular extends standard HTML with additional features, allowing developers to bind data, create dynamic content, and respond to user events.

Key Concepts

Templates can include Angular directives.
Templates can bind to component properties and methods.
Templates support interpolation and property binding.

Code Example


            {{ title }}
            
            Hello, {{ name }}!

Data Binding

Data binding in Angular is a mechanism that allows synchronization between the model and the view. It ensures that if the model changes, the view reflects those changes, and vice versa.

Types of Data Binding

1. One-way Data Binding

Data flows in one direction, from the component to the view or from the view back to the component.


                {{ title }}

2. Two-way Data Binding

Data flows in both directions. Changes in the input field update the model, and changes in the model update the view.


                
                Hello, {{ name }}!

Best Practices

Use property binding for dynamic attributes.
Use event binding for handling events.
Keep templates clean and readable.
Avoid complex logic in templates; keep it in the component.

FAQ

What is data binding?

Data binding is a method of synchronizing data between the model and the view in Angular applications.

What are templates in Angular?

Templates are HTML files that define the UI of the Angular components, enhanced with Angular's special syntax.

How can I achieve two-way data binding?

You can achieve two-way data binding using the ngModel directive in Angular, combined with forms.