Solving the TypeError: Cannot read properties of undefined in Vue.js and Nuxt.js

---

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: TypeError: Cannot read properties of undefined (reading 'products')

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---

What Causes This Error?

Example Scenario

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

In this code, the line that causes the error is:

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

Implementing a Solution

Step 1: Correct the Data Assignment

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

Step 2: Safeguard Against Undefined Properties

After updating the data assignment, we should also ensure that our computed property can handle cases where products might still be undefined. You can use a conditional check to return an empty array if products are not available yet:

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

Complete Code Example

Your component code will now look like this:

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

Conclusion

Encountering the TypeError: Cannot read properties of undefined can be tricky and frustrating, especially in complex applications. By understanding where and why this issue arises, you can implement simple checks and adjustments to your code to ensure your app remains robust and functional. With a few key changes, you can save yourself from headaches and provide a smooth user experience. Happy coding!