Tips For Handling and Tracking Errors in JavaScript

Let’s discuss some useful tips and tools to handle and track errors in your JavaScript applications. This is often overlooked in tutorials, where the focus is usually on the best-case scenario. By the end of this post, you’ll have a better idea of how to handle and track errors, especially after deploying them to production.

Don’t Just Use Console.log in JavaScript

Logging is more than just the console.log() that most people are familiar with. There are other functions available in the console object that you can use, such as, console.debug(), console.warn(), and console.error().

Using these methods appropriately makes it much easier to filter through your logs when debugging your applications later on.

Choose a Better Log Management Tool

Most hosting platforms have a built-in way to view yours logs. However, this isn’t the most convenient way to access them as they aren’t easily searchable. For example, with an app hosted on Heroku you have a few different options. In addition to viewing logs in the dashboard, you can also use the Heroku CLI to view your logs:

heroku logs --tail

This will show your logs as they come in, making it easier to see what’s happening in real-time. For a more searchable option, consider moving yours to a tool with more features and capabilities.

With my Discord bot application hosted on Heroku, I added Logtail through the add-ons sidebar. It has very powerful search capabilities that makes it a lot easier to search and filter logs to help in the debugging process.

Whatever hosting platform you’re using, it’s probably worth investing in an outside tool with more functionality!

Sometimes you need more than just logging. Recently, I had the creator of on my stream (full video here) to show me it’s capabilities, and I was blown away!

Highlight is an open-source full-stack monitoring framework that offers session replay, error monitoring, logging, and self-hosting capabilities. Here’s a quick rundown of some of its features:

  1. Session Replay: See what users do on your website by watching a video of their session. This is great for UI/UX research and tracking errors that users encounter.
  2. Errors: Monitor errors that occur in both the front-end and back-end of your application. captures detailed information about the error, making it much easier to debug.
  3. Logs: View and search all of your logs in one convenient dashboard. This feature is relatively new but incredibly helpful.
  4. Alerts: Configure alerts to notify you when certain thresholds are reached, such as a particular number of errors within a specified time frame. offers all of these features for free, making it an excellent tool to add to your error handling and tracking arsenal.


Having a solid strategy for error handling and tracking in your JavaScript applications is essential to maintaining and debugging your applications post-deployment. Using the different console methods intentionally, properly handling errors with try-catch blocks, and utilizing additional tools can make this process much more manageable.