How do I debug JavaScript code effectively?
Asked on Aug 31, 2024
Answer
Debugging JavaScript code effectively involves using tools and techniques to identify and fix errors. Here is a simple example of using "console.log" for debugging:
<!-- BEGIN COPY / PASTE -->
function add(a, b) {
console.log("Inputs:", a, b); // Debugging: Log inputs
const result = a + b;
console.log("Result:", result); // Debugging: Log result
return result;
}
add(2, 3);
<!-- END COPY / PASTE -->Additional Comment:
✅ Answered with JavaScript best practices.- Use "console.log" to print variable values and track the flow of execution.
- Place "console.log" statements before and after critical operations to verify expected behavior.
- Modern browsers offer developer tools (like Chrome DevTools) with features like breakpoints, call stack inspection, and variable watches.
- Consider using "debugger;" statements to pause execution and inspect the current state in developer tools.
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