What is Template Reference Variable in Angular ?94

 What is Template Reference Variable in Angular ?

A Template Reference Variable in Angular is a way to access elements or directives within your application's template. By assigning a variable name using the # symbol to an element or directive, you can reference it later in your component's TypeScript code to perform actions or manipulate its properties. This allows for more dynamic and interactive components.

Here are the key points about Template Reference Variables:

How to declare:

Use the # symbol followed by a variable name when referencing an element or directive in your template.

HTML

<button #myButton (click)="handleClick()">Click me</button>

What can you reference:

• HTML elements (e.g., buttons, inputs, divs)

• Directives (e.g., NgModel, NgFor)

• TemplateRef objects (representing a template)

Use cases:

• Focus an element programmatically: myButton.focus().

• Access directive properties or methods: myNgModel.value.

• Use a TemplateRef to dynamically insert content: *ngTemplateOutlet="myTemplateRef".

Benefits:

• Improves code readability by giving meaningful names to elements.

• Enables interaction with UI elements from your component logic.

• Creates more dynamic and data-driven templates.

Things to keep in mind:

• Template reference variables are local to the template where they are declared.

• They are evaluated during view creation, so use them cautiously if you need dynamic access based on runtime changes.

• Consider using alternative approaches like ViewChild or ElementRef for more advanced scenarios.

Here are some additional resources that you might find helpful:

• Angular documentation on Template Reference Variables: https://angular.io/guide/template-reference-variables

• Tutorial on using Template Reference Variables: https://angular.io/api/core/ViewChild

• Best practices for using Template Reference Variables: https://angular.io/guide/template-reference-variables

I hope this comprehensive response clarifies your understanding of Template Reference Variables in Angular. Feel free to ask if you have any further questions or need more specific examples.