Phase 03Proving it works171 of 434
The panels you never open
Network, Performance and Memory on a page that is genuinely slow, until you can say which milliseconds went where.
Build40 minAI pair
Build this in your own editor
This one runs on your machine rather than in the browser workbench. Work to the outcomes below, then come back and mark it complete.
You should now be able to
- Attribute a slow page to network, script or layout from a profile
- Take a heap snapshot and find what is retaining a detached node
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