Understanding Angular data binding

Question

While reading Angular 2 documentation, I came across this (emphasis mine)

Angular processes all data bindings once per JavaScript event cycle, from the root of the application component tree through all child components.

Please explain in as much detail as possible what this means? Especially what is "once per event cycle"?

You should probably raise a documentation issue on their project if you feel it's lacking in information — Phil
– Phil, Commented Sep 26, 2016 at 3:53

Manish · Accepted Answer · 2016-09-26 04:07:29Z

2

I think it refers to any change or event triggered(Like changing input field ).Once any change occurs it starts from top to bottom. you can learn more here https://vsavkin.com/change-detection-in-angular-2-4f216b855d4c#.a3ggxt9hl

answered Sep 26, 2016 at 4:07

Manish

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4 Comments

choz Over a year ago

I don't think if this should be considered as one possibility of what event cycle is. Since, there's actually no cycles in JS native events.

Manish Over a year ago

i mean events are emiited on change & --------------> from parent change is propagated <--------------- angular.io/resources/images/devguide/architecture/…

Manish Over a year ago

report it to the community(github.com/angular/angular/issues). They can give some insight. I am also bit confused :(

choz Over a year ago

Oh got it.. Actually this might be it.

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