35+ JavaScript Debugging Questions

JavaScript Debugging Questions:

• What is debugging in JavaScript?
• What are common tools used for debugging JavaScript code?
• How do you use `console.log()` for debugging?
• What is the purpose of `debugger` in JavaScript?
• How can you debug JavaScript code in the browser?
• What are browser developer tools, and how are they used?
• How do you set breakpoints in JavaScript?
• What is the Call Stack in debugging?
• How can you inspect variables during debugging?
• What is the difference between `console.warn()` and `console.error()`?
• How do you handle uncaught exceptions in JavaScript?
• What is the purpose of a try-catch block in debugging?
• How do you debug asynchronous code in JavaScript?
• What tools can help in identifying memory leaks?
• How can you debug JavaScript in Node.js?
• What is the purpose of the `throw` statement in JavaScript?
• How do you handle syntax errors in JavaScript?
• What is source mapping in debugging?
• How do you debug performance issues in JavaScript?
• What are the common pitfalls of debugging JavaScript?
• How do you use the network tab in developer tools for debugging?
• How do you debug DOM-related issues in JavaScript?
• What is the difference between `console.dir()` and `console.log()`?
• How can you log the execution time of a function?
• What are the best practices for debugging JavaScript code?
• How do you debug issues with JavaScript frameworks like React or Angular?
• How can you debug event listeners in JavaScript?
• What are the benefits of using logging libraries for debugging?
• How do you debug issues caused by third-party scripts?
• What is step-over, step-into, and step-out in debugging?
• How can you debug callback functions in JavaScript?
• What is the role of source maps in debugging minified JavaScript files?
• How can you debug code running in an iframe?
• What are some techniques for debugging infinite loops in JavaScript?
• How can you debug issues with JavaScript timers (`setTimeout`, `setInterval`)?
• How do you trace the origin of an error in JavaScript?
• What tools can help you debug JavaScript in production?