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Coding tips and build notes by Mahir Faysal, a student web developer in Bangladesh: tested Python, HTML, CSS, JavaScript and PHP tutorials, plus notes from my Next.js and Gemini projects. Sample posts are marked and drafts stay in the admin area.

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Coding tips

JavaScript Deep Copy Object: structuredClone vs JSON vs Spread

structuredClone(obj) makes a true deep copy that keeps Dates, Maps, Sets and circular references. When spread, Object.assign and JSON.stringify break, and how to copy classes.

October 7, 2026 · 17 min read · 0 views

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