Debugging with Console & DevTools

If the complexProcessing function is slow, which DevTools panel would best help identify the performance impact?

function processItems(items) {
  const result = [];
  for (let i = 0; i < items.length; i++) {
    const processed = complexProcessing(items[i]);
    result.push(processed);
  }
  return result;
}

Console panel
Elements panel
Performance panel
The Performance panel is specialized for runtime performance analysis: 1) It records a detailed timeline of all JavaScript execution, rendering, and browser events, 2) The flame chart visualization shows function call stacks and their duration, 3) Long-running functions like complexProcessing would appear as wide bars in the chart, 4) It provides precise timing measurements for function execution, 5) CPU utilization and bottlenecks are clearly identified, 6) The panel shows both overall performance metrics and detailed function-level timing, 7) It can identify blocking JavaScript operations that cause UI jank or responsiveness issues, 8) This comprehensive performance profiling is essential for optimizing CPU-intensive operations and identifying specific functions that need improvement.
Network panel

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