How does vuejs access external import methods in vue components

In Vue.js, accessing external imported methods in Vue components involves two main steps: first, import the required methods into your component file, and second, call these imported methods within the component's methods object.

Step 1: Importing Methods

Suppose you have an external JavaScript file named utils.js that defines a method calculate, which you want to use in your Vue component.

javascript
// utils.js
export function calculate(a, b) {
    return a + b;
}

You can import this method into your Vue component using the import statement:

vue
<template>
  <div>
    <h1>The result is: {{ result }}</h1>
    <button @click="getResult">Calculate</button>
  </div>
</template>

<script>
import { calculate } from './utils';

export default {
  data() {
    return {
      result: 0
    };
  },
  methods: {
    getResult() {
      this.result = calculate(5, 3); // Using the imported method
    }
  }
}
</script>

Step 2: Using Methods

In the above example, you import the calculate method into the component and create a method named getResult within the component's methods object. In the getResult method, you call the imported calculate method and assign the returned value to the component's data property result.

Use Cases

This approach of importing and using external methods is very useful, especially when you need to use the same logic or functionality across multiple components. It helps with code reuse and separation of concerns, making the code more modular and maintainable.

For example, if you have multiple components that need to perform the same mathematical calculations, format data, or make API calls, you can abstract these common logic into one or more external files and import them into the necessary components.

Conclusion

This approach enables Vue.js to facilitate code sharing between components in a simple and efficient manner, helping to maintain clean and organized code. Using external imported methods not only reduces code redundancy but also keeps individual files manageable, making them easier to maintain.