Dev 3: new content in Js Data Type || new update in blog

[ajay-dhangar]

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[github-actions]

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[deepsource-io]

Here's the code health analysis summary for commits 4a0de7b..8d7837c. View details on DeepSource ↗.

Analysis Summary

Analyzer	Status	Summary	Link
JavaScript	✅ Success		View Check ↗

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[github-actions]

⚡️ Lighthouse Report for the Deploy Preview of this PR 🚀

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URL 🌐	Performance	Accessibility	Best Practices	SEO	📊
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/courses	🔴 47	🟢 96	🟢 96	🟢 100	📄
/courses/category/reactjs	🟡 56	🟢 96	🟢 96	🟢 100	📄
/dsa-problems	🟡 51	🟢 96	🟢 96	🟢 100	📄
/dsa-problems/category/leetcode-problems	🔴 49	🟢 96	🟢 96	🟢 100	📄
/dsa-solutions	🟡 51	🟢 96	🟢 96	🟢 100	📄
/dsa-solutions/category/leetcode-solutions	🟡 51	🟢 96	🟢 96	🟢 100	📄
/blog	🔴 37	🟢 96	🟢 96	🟢 100	📄
/showcase	🔴 47	🟢 95	🟡 75	🟡 86	📄
/community	🟡 56	🟢 96	🟢 96	🟢 100	📄
/docs/tags	🔴 47	🟢 96	🟢 96	🟡 86	📄