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How can I dynamically bind a class in vue JS based on a function?

Here is my code snippet:

:class="{{this.isMobile() ? 'mobile-chip-overflow' : 'chip-overflow'}}"

However, I'm encountering a console error saying "isMobile is null"

Answer №1

A more streamlined way to bind without using {{ }} and this. would be as follows:

:class="isMobile() ? 'mobile-chip-overflow' : 'chip-overflow'"

This method should suffice.

UPDATE:

When incorporating a .js file with reusable functions, it is recommended to utilize a mixin. However, if you prefer not to employ it, you can import the function like so:

  methods: {
    isMobile: import isMobile from './abstract.js',
  }

Alternatively, you could import it in this manner:

import abstractFunctions from './abstract.js';

export default {
  methods: {
    isMobile: abstractFunctions.isMobile,
  },
};

It depends on the export method used within the abstract.js file.

Answer №2

You have the option to create

:class="chipStyles"


computed: {
    chipStyles: () {
        return {
            mobile-chip-overflow: this.isMobile(),
            chip-overflow: !this.isMobile()
        }

    }
}

Alternatively, you can also use

:class="{mobile-chip-overflow: this.isMobile(),
         chip-overflow: !this.isMobile()
         }"

I personally went with the second approach and it proved to be effective.

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