How to Properly Fetch Data in Vue.js Mounted Using Axios

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The Problem: Data Not Displaying in Mounted

You may find yourself in a situation where you call an API to fetch data when your component is mounted but end up not seeing the expected data in your component. For example, after making a call to get themes data using Axios, you might attempt to log the result in the mounted hook but see unexpected results, like an empty array or undefined variables.

Understanding the Asynchronous Nature of Axios

Axios calls are asynchronous, meaning that they run in the background and do not block the execution of subsequent code. Because of this, if you try to access your fetched data immediately following the Axios call, it might not be available yet, resulting in errors or empty outputs.

The Solution: Correctly Fetching Data on Mounted

Step 1: Modify Your Mounted Hook

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Ensure Your getThemes Method is Properly Structured

In your methods section, ensure that your getThemes method is also correctly using async/await. Here’s an optimal structure for it:

[[See Video to Reveal this Text or Code Snippet]]

Key Takeaways

Use async/await properly: Ensure you are waiting for your asynchronous calls to complete to correctly access the results.

Access data after fetching: Always perform data manipulations after the promise has resolved.

Conclusion

Feel free to reach out or comment if you have further questions or run into issues with your Axios calls! Happy coding!