Loading external scripts prior to component loading in Vue.js

Question

Loading external scripts prior to component loading in Vue.js

Within my Vue project, I have the need to fetch a script from a server location (e.g. https://myurl.com/API.js). This script contains a variable that I intend to utilize within my Vue component/view. The issue arises when I attempt to load this script using the loadScript module:

import Vue from 'vue'
import LoadScript from 'vue-plugin-load-script';

Vue.use(LoadScript);
Vue.loadScript('https://quvia.cz:4443/portalAPI.js')

The script ends up loading after the Vue component, leading to situations where trying to

console.log(externalScriptVariable)

results in an undefined value. As a quick workaround, using setTimeout for 1 second allows the variable to be output successfully.

Is there any way in Vue.js to effectively "await" the script loading process, ensuring it loads before all other Vue components?

javascript vue.js

Answer 1

Answer №1

To utilize asynchronous functionality in Vue, you have two options:

import Vue from 'vue'
import LoadScript from 'vue-plugin-load-script';

Vue.use(LoadScript);

(async function() {
  await Vue.loadScript('https://quvia.cz:4443/portalAPI.js');
  // perform additional actions once the script is loaded
})();

You can also use promises with then:

import Vue from 'vue'
import LoadScript from 'vue-plugin-load-script';

Vue.use(LoadScript);

Vue.loadScript('https://quvia.cz:4443/portalAPI.js').then(() => {
  // handle other tasks after the script loads successfully
})
.catch(() => {
  // catch any errors that may occur during loading
});

Answer 2

To utilize asynchronous functionality in Vue, you have two options:

import Vue from 'vue'
import LoadScript from 'vue-plugin-load-script';

Vue.use(LoadScript);

(async function() {
  await Vue.loadScript('https://quvia.cz:4443/portalAPI.js');
  // perform additional actions once the script is loaded
})();

You can also use promises with then:

import Vue from 'vue'
import LoadScript from 'vue-plugin-load-script';

Vue.use(LoadScript);

Vue.loadScript('https://quvia.cz:4443/portalAPI.js').then(() => {
  // handle other tasks after the script loads successfully
})
.catch(() => {
  // catch any errors that may occur during loading
});

Answer 3

Answer №2

In my experience, I was able to resolve the issues by utilizing the "window" scope. Additionally, when needing to access a Vue element within the "onload" function, it was necessary to create a new variable for the current instance of "this".

<script>
import { mapActions } from "vuex";
export default {
      name: "Payment",
      methods: {
        ...mapActions(["aVueAction"])
      },
      created() {
            let paywayScript = document.createElement("script");
            let self = this;
            paywayScript.onload = () => {
              // calling Vuex action
              self.aVueAction();
              // calling script function
              window.payway.aScriptFunction();
            };
            
            paywayScript.setAttribute(
              "src",
              "https://api.payway.com.au/rest/v1/payway.js"
            );
            document.body.appendChild(paywayScript);
      }
};
</script>

This code was implemented in Vue 2.6.

Answer 4

In my experience, I was able to resolve the issues by utilizing the "window" scope. Additionally, when needing to access a Vue element within the "onload" function, it was necessary to create a new variable for the current instance of "this".

<script>
import { mapActions } from "vuex";
export default {
      name: "Payment",
      methods: {
        ...mapActions(["aVueAction"])
      },
      created() {
            let paywayScript = document.createElement("script");
            let self = this;
            paywayScript.onload = () => {
              // calling Vuex action
              self.aVueAction();
              // calling script function
              window.payway.aScriptFunction();
            };
            
            paywayScript.setAttribute(
              "src",
              "https://api.payway.com.au/rest/v1/payway.js"
            );
            document.body.appendChild(paywayScript);
      }
};
</script>

This code was implemented in Vue 2.6.

Answer 5

Answer №3

If you want to dynamically load a script in Vue, consider using the beforeCreate() lifecycle hook provided by Vue.

import LoadScript from 'vue-plugin-load-script';

export default {
  name: "App",
  beforeCreate() {
    LoadScript('https://quvia.cz:4443/portalAPI.js')
  }
};

There are other lifecycles available in Vue that may also be suitable for your needs - you can explore them here: https://v2.vuejs.org/v2/guide/instance.html

Additionally, calling the LoadScript function in the main.js file ensures it is executed before any components are loaded.

Answer 6

If you want to dynamically load a script in Vue, consider using the beforeCreate() lifecycle hook provided by Vue.

import LoadScript from 'vue-plugin-load-script';

export default {
  name: "App",
  beforeCreate() {
    LoadScript('https://quvia.cz:4443/portalAPI.js')
  }
};

There are other lifecycles available in Vue that may also be suitable for your needs - you can explore them here: https://v2.vuejs.org/v2/guide/instance.html

Additionally, calling the LoadScript function in the main.js file ensures it is executed before any components are loaded.

Loading external scripts prior to component loading in Vue.js

Answer №1

Answer №2

Answer №3

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