JavaScript Performance Tester

Test Functions

(max: 100)

About Performance Testing

This tool helps you compare the performance of different JavaScript functions by measuring their execution time. It runs each function multiple times and calculates the average.

How to Use

  1. Enter your JavaScript code in the textarea
  2. Add more functions if needed (up to 4)
  3. Set the number of iterations (max: 100)
  4. Click "Run Tests" to execute and automatically save your data
  5. View the results sorted by performance
  6. Use "Remove" to delete a function from the tester and localStorage

Performance Tips

  • Use more iterations for more accurate results
  • Include a return statement in your functions
  • Avoid console.log in performance-critical code
  • Consider using performance.now() for precise timing