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Khang Tran ⚡️
Khang Tran ⚡️

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🅰️🚀 𝗔𝗻𝗴𝘂𝗹𝗮𝗿 𝘃𝟭𝟴 𝗛𝘆𝗯𝗿𝗶𝗱 𝗖𝗵𝗮𝗻𝗴𝗲 𝗗𝗲𝘁𝗲𝗰𝘁𝗶𝗼𝗻 𝗠𝗼𝗱𝗲

From version 18, Angular will adopt Hybrid change detection scheduling by default, leading to DX improvements.

What is exactly the Hybrid Mode?

• When Angular receives a clear indication that templates need to be refreshed and change detection should run again, this should not be ignored, 𝘳𝘦𝘨𝘢𝘳𝘥𝘭𝘦𝘴𝘴 𝘰𝘧 𝘸𝘩𝘢𝘵 𝘡𝘰𝘯𝘦 𝘪𝘵 𝘩𝘢𝘱𝘱𝘦𝘯𝘦𝘥 𝘪𝘯.
• It means now Angular will ensure change detection does run, even when the state update originates 𝘧𝘳𝘰𝘮 𝘰𝘶𝘵𝘴𝘪𝘥𝘦 𝘵𝘩𝘦 𝘻𝘰𝘯𝘦.
• It leads to DX improvements since we no longer need to write code that utilizes Angular Zone on-demand, jumping in and out of the Angular Zone using ngZone.runOutSideAngular(() => ...)/ ngZone.run(() => ...), respectively.

Angular APIs to schedule change detection

• calling ChangeDetectorRef.markForCheck
• calling ComponentRef.setInput
• updating a signal that is read in a template
• when bound host or template listeners are triggered
• attaching a view that is marked dirty
• removing a view
• registering a render hook (templates are only refreshed if render hooks do one of the above)

Back to top example

Angular v18 Hybrid change detection mode

For more information, highly recommend the following article by Matthieu Riegler:
https://riegler.fr/blog/2024-04-17-zoneless-with-zoneless-hybrid

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