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15 Javascript Errors That You Must Know How To Debug - Programming - Nairaland

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15 Javascript Errors That You Must Know How To Debug by digitaltechhub(m): 9:09pm On Feb 09, 2023
Debugging JavaScript is the process of finding and correcting errors in a program’s code. It is an essential part of the development process and is an important skill for any web developer.
it is important to learn how to debug JavaScript errors as it allows developers to gain a better understanding of the code they are writing. It allows developers to become more familiar with the code, furthering their knowledge and deepening their understanding. As debugging enables developers to familiarize themselves with the code, it can substantially increase their proficiency and effectiveness in coding.
Debugging JavaScript errors can be a challenge for even the most experienced developers. In fact, it can be one of the most time-consuming and frustrating tasks. In this article, we will discuss 10 tips and tricks that can help you quickly locate and fix JavaScript errors.

1. Use Console.log() For Error Detection: Console.log() is an essential tool when it comes to debugging JavaScript errors. It allows you to log the progress of your script and detect potential errors early on. Simply insert console.log() into your code at points where you expect it to catch an error.

2. Utilize JavaScript Error Logging Libraries: Error logging libraries make debugging JavaScript errors a much easier task. Libraries such as Winston, Sentry, and Track JS capture errors and send notifications of the code that caused the error, allowing you to quickly identify and fix the problem.

3. Break Down Code Into Smaller Sections: Breaking down your code into smaller sections can be very helpful in identifying errors. By doing so, you can narrow down the area in which the error is occurring, which is often much easier than trying to fix the whole code at once.

4. Eliminate Syntax Errors: Syntax errors are one of the most common causes of JavaScript errors, and often the most difficult to fix. Carefully review your code for typos and other errors such as missing quotes or semicolons.

5. Understand the Difference Between Runtime and Syntax Errors: It’s important to understand the difference between runtime errors and syntax errors as they require completely different approaches to be resolved. Runtime errors occur when the code is syntactically correct but doesn’t produce the expected output, while syntax errors are syntactically incorrect.

6. Test Your Code In Different Browsers: If you are working on a web application, it’s important to test it in different browsers as different browsers may produce different results. This will help you determine whether the error you are seeing is browser-specific or not.

7. Actively Test Your Code: When debugging your code, it’s always a good idea to actively test it. Add breakpoints and step through your code to gain a better understanding of what it is doing and how it is producing results.

8. Use an Error Tracking Tool: An error tracking tool can be a great help when debugging JavaScript errors. It can provide a detailed report of errors that can be helpful in understanding how errors are occurring and where they are coming from.

9. Review Error Messages Carefully: Error messages can provide useful information about the source of the problem. Coupled with other debugging tools and techniques, error messages can help you quickly identify and fix errors.

10. Take Breaks: Debugging can be a long and frustrating task and it’s important to take breaks in order to keep your mind from going blank. Different people have different strategies for taking breaks. Some take five minutes every hour, others take fifteen minutes every three hours, etc. It’s important to find the approach that works for you.

10 Tools for Debugging JavaScript Errors:
Read more here: https://digitaltechhub.co.uk/15-javascript-errors-that-you-must-know-how-to-debug/

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