Скачать или смотреть Fixing axios Not Returning Data from an API

Learn how to troubleshoot and fix the issue of `axios` not returning any JSON data from an API in your Node.js application.
---
This video is based on the question https://stackoverflow.com/q/64168833/ asked by the user 'niels van hoof' ( https://stackoverflow.com/u/11988656/ ) and on the answer https://stackoverflow.com/a/64170777/ provided by the user 'Deepak Poojari' ( https://stackoverflow.com/u/4477520/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: axios is not getting any data from an api

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
Fixing axios Not Returning Data from an API: A Step-by-Step Guide

When working with axios to fetch data from an API, it can be frustrating when you find that the function isn't returning any data as expected. In this guide, we'll walk through a common issue encountered when using axios in a Node.js application and how you can fix it step by step.

The Problem

You might have encountered a scenario where your axios function returns nothing or an unexpected output. In the following example, we are trying to fetch cryptocurrency data from CoinCap's API. Here’s the function that was meant to retrieve this data:

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

When you call this function, you expect to log the data to the console, but instead, you get the function definition itself, which means the data is not being correctly retrieved.

Understanding the Issue

The main reason behind axios not returning any data lies in how we are handling the async nature of the function. There are two common problems that lead to this scenario:

Unnecessary usage of await: In the current setup, there is an extra await in the return statement which can interfere with the correct retrieval of data.

Not awaiting the function call: You need to use await on the function call when it’s invoked in your route handler.

The Solution

Let's break down the solution into simple steps:

Step 1: Fix the getCoins Function

Remove the unnecessary await from the return statement. The corrected function should look like this:

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

Step 2: Correctly Call the Function in the Route Handler

When you call getCoins in your route handler, ensure you add await before it to correctly handle the asynchronous nature of the function. Also, don't forget to include parentheses to invoke the function:

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

Step 3: Rendering the Data in Your View

Now that you have the data returned correctly, you can loop through it in your view. Here is an example of how you might set this up in your template:

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

Conclusion

By addressing both the incorrect usage of await and ensuring you await the getCoins function call properly, you should be able to successfully retrieve and display data from the API. When dealing with asynchronous operations, always remember the importance of handling promises effectively.

If you still encounter issues, make sure to check your network connection, API endpoint validity, and any error messages that may arise.

Hopefully, this guide has helped clarify the steps to take when your axios function is not returning data. Happy coding!