What are some common JavaScript performance mistakes I should avoid?
An example of an AI chatbot conversation about common JavaScript performance mistakes.
What are some common JavaScript performance mistakes I should avoid?
Some common mistakes include not using 'let' and 'const', excessive DOM manipulation, and not using event delegation.
Can you explain why excessive DOM manipulation is a problem?
Excessive DOM manipulation can lead to performance issues because each change can cause the browser to reflow and repaint the page, which is resource-intensive.
What is event delegation and how does it improve performance?
Event delegation is a technique where you attach a single event listener to a parent element instead of multiple listeners to child elements, reducing memory usage and improving performance.
Are there any tools to help identify performance issues in my JavaScript code?
Yes, tools like Chrome DevTools, Lighthouse, and WebPageTest can help you analyze and identify performance bottlenecks in your JavaScript code.
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