Added JS Execution Notes & Node.js Installation Guide

[deepanshu-prajapati01]

Hi team 👋

This PR brings two new, beginner-friendly documentation pages: one covering how JavaScript code is executed, and another with a step-by-step guide to installing Node.js (with a nod to VS Code setup for streamlined development).

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🔍 Problem Resolved

• No dedicated notes section for understanding JavaScript’s execution process (memory creation, code execution, call stack, scope, etc.).
• No clear onboarding steps for new users to install Node.js and start working with JS locally.

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✅ What’s Changed

• Added a fresh notes/explanation page summarizing how JavaScript executes, including core concepts like the two execution phases (creation, execution), global/function contexts, memory allocation, and the call stack.
  Example code snippets reinforce the execution concepts.
• Added an installation guide page showing how to download and install Node.js step by step. Shared a basic “Hello World” code sample.
• Included initial hints about VS Code setup to help users get started in the right environment.

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📸 Screenshot

Execution Page

Node js installation page

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🎯 Result

• Users now have a clear foundational understanding of how JS runs code and how to set up their environment, lowering barriers for beginners and new contributors.
• Documentation is now more complete for onboarding and teaching.

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🏷 Labels Requested

• gssoc25
• level3
• frontend

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[netlify]

👷 Deploy request for codifylearn pending review.

Visit the deploys page to approve it

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