Enhancement of content under "JavaScript Introduction" page

[AditiTangri]

Description:

This issue proposes an enhancement of the content on the "JavaScript Introduction" page to improve its educational value and accessibility. Planned improvements include:

• Clearer explanation of JavaScript basics (variables, data types, functions, etc.)

• Inclusion of practical, real-world code examples

• Improved code formatting and syntax highlighting

• Better visual structure for readability and navigation

The goal is to make the page more beginner-friendly while ensuring technical accuracy and relevance for new developers.

Please assign this issue to me. I would like to contribute.

[github-actions]

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