There are several techniques and tools available to make it easier and more efficient.
One of the simplest and most effective debugging techniques is to use console.log() to print out the values of variables and objects at various points in your code. This can help you identify where your code is going wrong and what variables are causing the issue.
To open the console on browser, press F12 key and check the error.
Most modern web browsers have built-in debugging tools that allow you to step through your code, set breakpoints, and inspect the state of your program. Using a debugger can be a powerful tool for identifying and fixing errors in your code.
The debugger stops the execution of the program at the position it is applied. Now, we can start the flow of execution manually. If an exception occurs, the execution will stop again on that particular line.
Breakpoints allow you to pause the execution of your code at a specific line of code and inspect the state of your program. Most modern web browsers have built-in debugging tools that allow you to set breakpoints and step through your code line by line.
Try-catch blocks allow you to catch and handle errors in your code. By wrapping your code in a try-catch block, you can identify and handle errors in a more graceful way.
A good code editor can make debugging easier by highlighting errors and providing helpful suggestions. Look for a code editor with syntax highlighting, code completion, and debugging tools.
Here, we will find out errors using built-in web browser debugger. To perform debugging, we can use any of the following approaches: