Quick Answer
Measure jQuery performance: Chrome DevTools Performance tab records CPU/GPU/memory per frame. console.time/timeEnd measures specific operations. Navigation Timing API measures page load metrics. Web Vitals (LCP, FID, CLS) measure user-perceived performance. Avoid measuring in DevTools with cache disabled - test with realistic cache conditions. Set performance budgets for selector time and AJAX response time.
Answer
Use DevTools performance panel. Identify layout thrashing. Check slow handlers and repeated selectors. Profile complex event handling execution.
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SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
