Скачать или смотреть JavaScript Tutorial in Hindi #29 | Timer Functions (2025)

JavaScript Timer Functions Tutorial in Hindi || Mohit Decodes

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In this video, you’ll learn about the core timer functions in JavaScript: setTimeout(), setInterval(), and how to cancel them using clearTimeout() and clearInterval(). These functions are essential for delaying or repeating tasks in JavaScript—such as creating countdowns, auto-refreshes, or simple animations.

✅ Topics Covered:
Introduction to Timer Functions
How setTimeout() Works
Using setInterval() for Repeating Code
Clearing Timers with clearTimeout() and clearInterval()
Practical Examples – Countdown Timer & Repeated Alerts
Real-world Use Cases & Tips
Interview Questions and Answers

🎯 Key points for quick navigation:
00:00 🕰️ Introduction to JavaScript timer functions: setTimeout and setInterval.
00:13 🕒 setTimeout executes code after a delay, while setInterval repeatedly executes code at specified intervals.
00:28 🔄 Timer functions are asynchronous and run parallel to JavaScript code.
00:43 🛠️ Timers are built-in JavaScript functions that require no external import.
00:55 ⏹️ Use clearTimeout and clearInterval to stop timer functions.
01:38 🎬 Demonstration of setTimeout: Executes a code block after 2000 milliseconds.
03:11 🔄 setInterval example: Executes code every second until stopped manually.
05:16 ⏸️ Concludes with setup for discussing clearTimeout and clearInterval next.
05:29 ⏱️ Explanation of stopping a timer using clearTimeout and clearInterval functions is provided.
05:55 📊 A variable count is set to zero and is incremented every second using setInterval.
06:37 ⛔ When count reaches five, the interval is cleared using clearInterval.
07:04 🔄 The process automatically stops after five repetitions, demonstrating clearInterval functionality.
07:34 🕔 Example of clearTimeout is demonstrated by canceling a function before it executes after 5 seconds.
08:30 ⚡ clearTimeout executes before the queued asynchronous function, effectively preventing its execution.
08:58 🚀 Practical example shows the immediate effect of clearTimeout in stopping code execution.
09:11 💬 Viewers are encouraged to try countdown and repeated

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