Solution: The Built-in `NgClass` Directive
Learn how to implement the built-in Angular NgClass directive using string, array, and object expressions. Discover techniques to dynamically bind CSS classes through getter functions, improve code readability, and control styling logic effectively in Angular templates.
An NgClass with a string expression
Let’s take a look at the task where we implemented an NgClass with a string expression.
Solution
Here’s an example of what the solution for this task may look like:
Solution for the task with a string expression
Explained
The primary technique is using the getter function to return the proper string with all the CSS classes that we require. As we can see, there’s a simple if statement to check to see if we should set the warn-button class or proceed further to ...