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Post #580
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Post #579
716
JavaScript Event Loop: The Truth About setTimeout(0)
The Real Order of Operations:
1. Call Stack: Synchronous code (A, D) - This is where JavaScript executes code sequentially, like reading a script.
2. Microtasks: Promises (C) - These are small tasks that need to be executed ASAP after the current script, before the next rendering. Think of them as urgent side tasks.
3. Macrotasks: Timeouts/Intervals (B) - These are longer tasks that the browser queues up to do whenever it gets a chance. They're not as urgent as microtasks.
Golden Rule: "0ms" doesn't mean immediate - it means "next event loop tick".
The Real Order of Operations:
1. Call Stack: Synchronous code (A, D) - This is where JavaScript executes code sequentially, like reading a script.
2. Microtasks: Promises (C) - These are small tasks that need to be executed ASAP after the current script, before the next rendering. Think of them as urgent side tasks.
3. Macrotasks: Timeouts/Intervals (B) - These are longer tasks that the browser queues up to do whenever it gets a chance. They're not as urgent as microtasks.
Golden Rule: "0ms" doesn't mean immediate - it means "next event loop tick".
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Post #571
568
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- 👏 1
Post #570
586
localStorage Persistence: The Silent Bank Vault
What’s happening?
localStorage is like a browser’s hard drive. It survives tab/window closures, even system reboots.
Unlike sessionStorage (which dies with the tab), localStorage sticks until explicitly cleared (localStorage.clear() or user clears browsing data).
Gotcha: It’s synchronous meaning it blocks the main thread if you store large data.
What’s happening?
localStorage is like a browser’s hard drive. It survives tab/window closures, even system reboots.
Unlike sessionStorage (which dies with the tab), localStorage sticks until explicitly cleared (localStorage.clear() or user clears browsing data).
Gotcha: It’s synchronous meaning it blocks the main thread if you store large data.
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- 👍 1
Post #569
529
Components of Docker
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Post #568
583
Post #567
563
REST API Cheatsheet
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Post #566
590
Cookies Vs Sessions
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Post #565
641
HTTP Status Codes
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Post #564
655
Var Vs let Vs const
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Post #563
664
CORS request path
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- 🥰 1
Post #562
686
PHP CHEATSHEET
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Post #561
701
CSS Cheat Sheet
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