JavaScript Interview Question: How Many Popup Boxes available in JavaScript?
Автор: Frontend In depth
Загружено: 2025-05-31
Просмотров: 1948
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💡 How many types of popup boxes are there in JavaScript?
This is one of the most commonly asked frontend interview questions, especially for beginners — and trust me, it’s not as basic as it sounds.
👇 Here's the breakdown:
1️⃣ Alert Box – Used to show simple messages to the user.
🗨️ Example: alert("This is an alert!")
📌 Mostly used for warnings, notifications, or debugging.
2️⃣ Confirm Box – Asks the user to make a Yes/No decision.
🗨️ Example: confirm("Are you sure you want to delete this?")
📌 Returns true or false based on the user's choice. Great for critical actions like delete/submit.
3️⃣ Prompt Box – Used to collect input from the user.
🗨️ Example: prompt("What’s your name?")
📌 Returns the entered value or null if cancelled. Handy for quick data collection.
These three popup boxes are part of the Window object in JavaScript, and while they look outdated in modern UI — interviewers still ask them to test your basic understanding of JS behavior and browser interactions.
✅ Knowing when and why to use each one is key — not just the syntax.
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