Asynchronous JS stacks about devtools-docs HOT 11 CLOSED

tests

http://src.chromium.org/viewvc/blink/trunk/LayoutTests/inspector/debugger/async-callstack.html
http://src.chromium.org/viewvc/blink/trunk/LayoutTests/inspector/debugger/async-callstack-expected.txt

from devtools-docs.

cc @pearlchen

from devtools-docs.

To anyone that wants to play with this feature:

• open https://rawgithub.com/mirrors/blink/master/LayoutTests/inspector/debugger/async-callstack.html
• in canary devtools / sources .. turn on the async checkbox
• place a few breakpoints or whatever
• run this in console:
  • testFunction()

there are a few other tests files for async callstacks in https://github.com/mirrors/blink/tree/master/LayoutTests/inspector/debugger

from devtools-docs.

post format: similar to http://www.html5rocks.com/en/tutorials/canvas/inspection/

• let's identify what we think is the most compelling usecase here. should highlight it.. whatever it is. :)
• coverage of async support:
  • Timers
  • Animation frames
  • XHRs
  • Event listeners
  • MutationObservers
  • Promises
  • CustomElement lifecycle callbacks
  • Object.observe
• how it works as a user
• before/after screenshots
• small demo

from devtools-docs.

nice screenshot of async event listener stack.

i placed a breakpoint inside of an event handler. after i hit it i clicked back to where the event was registered.

from devtools-docs.

the feature is also fantastic for resolving event listeners:

you can walk from the event handler back to where it was registered in jQuery then back to where you asked for it to be registered in your app code.

from devtools-docs.

@pearlchen is there a draft of this that was started somewhere? :)

from devtools-docs.

@addyosmani Not yet -- other launches have gotten in the way. But this is what I'm working on today/tomorrow.

from devtools-docs.

Better timed animated gif:

from devtools-docs.

Obviously this feature is documented here:
http://www.html5rocks.com/en/tutorials/developertools/async-call-stack/

we'll need something in the docs, but this will do for now.

from devtools-docs.

from devtools-docs.