feat(Javascript): [Basics/Primality Test]

[haragam22]

Ah! Perfect — now I understand. Issue #76 is asking you to implement the Prime Check algorithm in JavaScript under the SyntaxBasics (Syn) folder.

We can prepare a ready-to-paste Pull Request (PR) message for this feature, just like your previous PRs.

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🚀 Submission Checklist

Thank you for contributing! Please check the boxes below to ensure a fast review.

• My code is placed in the correct Languages/JavaScript/SyntaxBasics/prime_check.js
• My code is functional and includes necessary comments.
• This PR addresses an existing issue.

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🔗 Linked Issue

Closes #76

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🧩 Description

Added a JavaScript implementation of Prime Check under the SyntaxBasics section.
This program checks whether a number is prime using a simple loop-based approach and demonstrates JavaScript fundamentals like loops, conditionals, and input/output handling.

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🧠 Features

• ✅ Beginner-friendly JavaScript code
• 🔁 Checks for primes using a straightforward iterative method
• 🧩 Handles numbers less than 2 and larger inputs
• 💬 Displays results clearly in the console
• 🧠 Strengthens the JavaScript SyntaxBasics folder with a fundamental math example

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🧪 Example Run

Input (via prompt() or hardcoded in code):

17

Output:

17 is prime

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🖥️ Verification

Tested locally using Node.js:

node Languages/JavaScript/SyntaxBasics/prime_check.js

✅ Works for various test cases (e.g., 1, 2, 3, 16, 17, 23)
✅ Handles invalid or small inputs gracefully

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🏷️ Commit Message

feat(JavaScript): Add Prime Check implementation under SyntaxBasics

[haragam22]

kindly review this pr for hacktoberfest 2025 at the erliest.