This content originally appeared on DEV Community and was authored by Nhan Nguyen
JavaScript has two secret queues to handle tasks: ๐ ๐ถ๐ฐ๐ฟ๐ผ๐๐ฎ๐๐ธ ๐ค๐๐ฒ๐๐ฒ and ๐ ๐ฎ๐ฐ๐ฟ๐ผ๐๐ฎ๐๐ธ ๐ค๐๐ฒ๐๐ฒ.
โจ๐ ๐ถ๐ฐ๐ฟ๐ผ๐๐ฎ๐๐ธ ๐ค๐๐ฒ๐๐ฒ: It's like a super-fast line where tiny tasks wait their turn. These tasks are usually promises or mutation observers. When a promise resolves or a mutation happens, they jump into the Microtask queue.
โจ ๐ ๐ฎ๐ฐ๐ฟ๐ผ๐๐ฎ๐๐ธ ๐ค๐๐ฒ๐๐ฒ: It's like a regular line for more significant tasks. Think setTimeout, callbacks, or fetching data from a server. When these tasks need handling, they join the Macrotask Queue.
JavaScript always finishes what it's doing before checking these queues. But it prioritizes ๐ ๐ถ๐ฐ๐ฟ๐ผ๐๐ฎ๐๐ธ over ๐ ๐ฎ๐ฐ๐ฟ๐ผ๐๐ฎ๐๐ธ.
I hope you found it helpful. Thanks for reading. ๐
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This content originally appeared on DEV Community and was authored by Nhan Nguyen
Nhan Nguyen | Sciencx (2024-06-29T05:38:33+00:00) JavaScript ๐ ๐ถ๐ฐ๐ฟ๐ผ๐๐ฎ๐๐ธ ๐ค๐๐ฒ๐๐ฒ and ๐ ๐ฎ๐ฐ๐ฟ๐ผ๐๐ฎ๐๐ธ ๐ค๐๐ฒ๐๐ฒ. Retrieved from https://www.scien.cx/2024/06/29/javascript-%f0%9d%97%a0%f0%9d%97%b6%f0%9d%97%b0%f0%9d%97%bf%f0%9d%97%bc%f0%9d%98%81%f0%9d%97%ae%f0%9d%98%80%f0%9d%97%b8-%f0%9d%97%a4%f0%9d%98%82%f0%9d%97%b2%f0%9d%98%82%f0%9d%97%b2-and-%f0%9d%97%a0/
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