Browser & Web Performance · Junior · Question 25 of 75

What is a long task on the main thread?

✓Correct answer: A task that runs for more than 50 ms
2Any task that runs longer than 1 ms
3A network request that takes more than 1 second

Explanation

While a long task runs, the browser can't respond to input or render, which hurts INP.

Further reading

web.dev: Optimize long tasks ↗

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