What is Class binding in Angular? 🤔 Angular Interview Q&A

Class binding in Angular is a powerful feature that allows you to dynamically add or remove CSS classes to elements based on certain conditions. This is particularly useful when building dynamic and responsive user interfaces.

One of the most common use cases for class binding is to style elements based on user interactions or data changes. For example, you can use class binding to add a “highlight” class to a table row when the user hovers over it, or to apply a “disabled” class to a button when a certain condition is met.

To use class binding in Angular, you can use the [class.className]="expression" syntax. Here, “className” is the name of the CSS class you want to bind, and “expression” is an Angular expression that evaluates to a boolean value. If the expression evaluates to true, the class will be added to the element; if it evaluates to false, the class will be removed.

For example, let’s say you have a button that should be disabled when a certain condition is met. You can use class binding like this:

<button [class.disabled]="isDisabled">Submit</button>

In this example, the “disabled” class will be added to the button when the “isDisabled” expression is true, and removed when it is false.

Class binding is a simple yet powerful feature that can help you create more dynamic and responsive user interfaces in your Angular applications. It’s definitely a skill worth learning for anyone working with Angular!

That’s all for this Angular Interview Q&A. Stay tuned for more insights and tips on Angular development!