Proper error handling is crucial for building robust Express applications that gracefully handle failures and provide meaningful responses to clients. As the creator of CoreUI with over 25 years of backend development experience, I’ve implemented error handling systems across numerous production APIs. The most effective approach is using Express’s built-in error handling middleware combined with custom error classes for different error types. This ensures consistent error responses and proper logging while preventing application crashes.

Using try-catch blocks in JavaScript enables robust error handling that prevents application crashes and provides graceful failure management. As the creator of CoreUI with over 25 years of JavaScript development experience, I’ve implemented comprehensive error handling in countless production applications and component libraries. From my expertise, the most effective approach is wrapping potentially error-prone code in try blocks and handling exceptions in catch blocks with appropriate fallback strategies. This pattern ensures applications remain stable and provide meaningful feedback when unexpected errors occur.

Setting breakpoints allows pausing JavaScript execution at specific lines to inspect variables, examine call stacks, and step through code for effective debugging. With over 25 years of experience in software development and as the creator of CoreUI, I’ve used breakpoints extensively for troubleshooting complex logic, performance analysis, and understanding code flow. From my expertise, the most versatile approach is using the debugger statement in code or setting visual breakpoints in browser developer tools. These methods provide precise control over execution flow and comprehensive debugging capabilities.

Using Chrome DevTools for JavaScript debugging provides powerful inspection capabilities, breakpoint management, and real-time code analysis for effective troubleshooting. As the creator of CoreUI with over 25 years of JavaScript development experience, I’ve relied on Chrome DevTools extensively for debugging complex applications, performance optimization, and development workflow. From my expertise, the most effective approach is combining console logging, breakpoint debugging, and the Sources panel for comprehensive code inspection. These tools provide complete visibility into code execution, variable states, and runtime behavior.

Using console.table provides a clean, organized way to view arrays and objects in a tabular format, making data inspection much easier during debugging. With over 25 years of experience in software development and as the creator of CoreUI, I’ve used console.table extensively for debugging complex data structures and API responses. From my expertise, the most effective approach is passing arrays of objects to console.table() to create well-organized, readable output in the browser console. This method transforms complex data into easily scannable tables with columns and rows.

Logging variables is fundamental for debugging JavaScript applications and understanding program flow during development. As the creator of CoreUI with over 25 years of JavaScript development experience, I’ve used console logging extensively for debugging complex UI interactions and data flows. From my expertise, the most effective approach is using console.log() with descriptive labels and leveraging advanced console methods for complex data structures. This practice provides immediate visibility into variable values and program execution.