LEARN. PRACTICE. EXPLAIN.
Learning paths & interview practiceP
Frontend Engineer
PerformanceIntermediate7 min

Each navigation adds another click handler.

  1. 1Your approach
  2. 2The follow-up
  3. 3Reflect & learn
THE INTERVIEWER ASKS

The scenario

A single-page app becomes slower after repeatedly opening and closing a screen. One click eventually triggers several requests. Investigate.

How would you approach it?

Explain your assumptions, your approach, and why you chose it.

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No timer. Think it through.
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