How to Properly Call Methods with Parameters in Vue.js using v-bind:class

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The Problem: Calling Methods Within v-bind:class

In your code, you attempted to use a computed property to add a CSS class to a <div> based on a parameter passed from the HTML element. The code looked something like this:

[[See Video to Reveal this Text or Code Snippet]]

While the addNewClass function works perfectly without parameters, when you attempt to pass parameters, it crashes the page and generates an error in the console. This issue arises from the fact that computed properties should not contain parameters.

The Solution: Use Methods Instead of Computed Properties

To resolve this issue, you should convert your addNewClass function from a computed property to a method. Here’s how you can restructure your code:

Vue Application Code Adjustment

[[See Video to Reveal this Text or Code Snippet]]

Key Changes Made

Convert addNewClass to a Method: In the code above, we define addNewClass within the methods section instead of computed. This allows the method to accept parameters without issues, preventing page crashes.

Function Logic Remains Intact: We maintained the same logic in the method to determine which CSS class should be returned based on the parameter passed in.

HTML Implementation

Your HTML can remain unchanged, as shown below:

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

Happy coding!