Event Loop
3D runtime stage
Code
Info
Script
Promise vs setTimeout
Microtask chain
What's happening
READY
Press
Step
to walk through one event at a time, or
Play
to watch the whole run. Drag to orbit, scroll or pinch to zoom. The glowing lanes show where tasks travel.
Console
Call stack frame
Web API (browser)
Microtask queue
Macrotask queue
Reset
Step ▸
▶ Play
Speed
1.0x
⛶
built by
arfin.dev