IntermediateBEHAVIORAL
Can you discuss a time when you had to debug a complex issue in your code? What was the problem and how did you go about solving it?
Frontend Developer
Technology

Sample Answer

On a previous project, we faced an issue where the application was experiencing significant lag during user interactions. I was tasked with debugging this issue. I started by inspecting the browser's performance tab, where I noticed that a particular component was re-rendering excessively. I traced this back to a function that was incorrectly placed inside a component, causing the component to re-render every time the state updated. By moving this function outside and using the useCallback hook, I was able to solve the problem and significantly improve the application's performance.

Keywords

JavaScript
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