JavaScript has two secret queues to handle tasks: š š¶š°šæš¼šš®ššø š¤šš²šš² and š š®š°šæš¼šš®ššø š¤šš²šš².
āØš š¶š°šæš¼šš®ššø š¤šš²šš²: 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.
āØ š š®š°šæš¼šš®ššø š¤šš²šš²: 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 š š¶š°šæš¼šš®ššø over š š®š°šæš¼šš®ššø.
I hope you found it helpful. Thanks for reading. š
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Hello everyone,
I hope you're all doing well. I recently launched an open-source project called the Ultimate JavaScript Project, and I'd love your support. Please check it out and give it a star on GitHub: Ultimate JavaScript Project. Your support would mean a lot to me and greatly help in the project's growth.
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