How to Add External Js Scripts to Vuejs Components

How to add external JS scripts to VueJS Components?

A simple and effective way to solve this, it's by adding your external script into the vue mounted() of your component. I will illustrate you with the Google Recaptcha script:

<template>
   .... your HTML
</template>

<script>
  export default {
    data: () => ({
      ......data of your component
    }),
    mounted() {
      let recaptchaScript = document.createElement('script')
      recaptchaScript.setAttribute('src', 'https://www.google.com/recaptcha/api.js')
      document.head.appendChild(recaptchaScript)
    },
    methods: {
      ......methods of your component
    }
  }
</script>

Source: https://medium.com/@lassiuosukainen/how-to-include-a-script-tag-on-a-vue-component-fe10940af9e8

How to add external JS scripts to VueJS Components?

A simple and effective way to solve this, it's by adding your external script into the vue mounted() of your component. I will illustrate you with the Google Recaptcha script:

<template>
   .... your HTML
</template>

<script>
  export default {
    data: () => ({
      ......data of your component
    }),
    mounted() {
      let recaptchaScript = document.createElement('script')
      recaptchaScript.setAttribute('src', 'https://www.google.com/recaptcha/api.js')
      document.head.appendChild(recaptchaScript)
    },
    methods: {
      ......methods of your component
    }
  }
</script>

Source: https://medium.com/@lassiuosukainen/how-to-include-a-script-tag-on-a-vue-component-fe10940af9e8

Importing javascript file for use within vue component

Include an external JavaScript file

Try including your (external) JavaScript into the mounted hook of your Vue component.

<script>
export default {
  mounted() {
    const plugin = document.createElement("script");
    plugin.setAttribute(
      "src",
      "//api.myplugincom/widget/mykey.js"
    );
    plugin.async = true;
    document.head.appendChild(plugin);
  }
};
</script>

Reference: How to include a tag on a Vue component

Import a local JavaScript file

In the case that you would like to import a local JavaScript in your Vue component, you can import it this way:

MyComponent.vue

<script>
import * as mykey from '../assets/js/mykey.js'

export default {
  data() {
    return {
      message: `Hello ${mykey.MY_CONST}!` // Hello Vue.js!
    }
  }
}
</script>

Suppose your project structure looks like:

src
- assets
    - js
      - mykey.js
- components
    MyComponent.vue

And you can export variables or functions in mykey.js:

export let myVariable = {};
export const MY_CONST = 'Vue.js';
export function myFoo(a, b) {
    return a + b;
}

Note: checked with Vue.js version 2.6.10

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