How To Run Vuejs Code Only After Vue Is Fully Loaded And Initialized

When you're working on a Vue.js project, you might come across a situation where you need to ensure that your Vue.js code runs only after Vue is fully loaded and initialized. This article will guide you on how to achieve this so that your code runs smoothly without any issues.

Firstly, it's essential to understand that Vue.js provides a way to run code only after the Vue instance has been created and mounted. This ensures that all the necessary elements are in place before your custom code starts executing.

To achieve this, you can use the `mounted` lifecycle hook provided by Vue.js. The `mounted` hook is called after the Vue instance has been mounted to the DOM, making it a perfect place to write code that requires Vue to be fully loaded and initialized.

Here's an example illustrating how you can run your Vue.js code only after Vue is fully loaded using the `mounted` hook:

new Vue({
  el: '#app',
  mounted: function() {
    // Your code here will run only after Vue instance is fully loaded
    console.log('Vue is fully loaded and initialized!');
  }
});

In the above example, we create a new Vue instance with the `el` option specifying the element to mount the Vue instance. Inside the `mounted` hook, we write the code that we want to run only after Vue is fully initialized.

Furthermore, if you need to perform asynchronous operations before running your code, you can make use of promises in combination with the `mounted` hook. This allows you to ensure that any asynchronous tasks are completed before running your Vue code.

new Vue({
  el: '#app',
  mounted: function() {
    // Perform asynchronous tasks here
    asyncTask().then(() => {
      console.log('Async task completed. Running code after Vue is fully loaded.');
    });
  }
});

By leveraging promises with the `mounted` hook, you can handle scenarios where your code depends on asynchronous operations to be completed before execution.

Another approach is to utilize the `created` hook in certain cases. The `created` hook is called synchronously immediately after the Vue instance is created, but before it is mounted to the DOM. While the `created` hook might not be suitable for all scenarios, it can be a viable alternative depending on your specific requirements.

new Vue({
  el: '#app',
  created: function() {
    // Your code here will run after Vue instance is created, but before mounted
    console.log('Vue instance created. Running code before it is mounted.');
  }
});

In conclusion, by using the `mounted` hook along with promises or the `created` hook when necessary, you can ensure that your Vue.js code runs only after Vue is fully loaded and initialized. This approach allows you to maintain a structured and controlled flow of execution in your Vue.js projects, helping you avoid potential issues related to code running prematurely.