add solution of js_gallery_DOM

[zarubina20]

No description provided.

[mateacademy-ai-mentor]

Review Summary

Your implementation is correct and meets all core requirements. The event delegation pattern is properly implemented with target.closest('a') handling both click scenarios effectively. The main image updates correctly with both src and alt attributes from the clicked thumbnail's parent link. The only item marked as "UNCLEAR" is the README DEMO LINK placeholder replacement. If you haven't already, simply replace <your_account> with your actual GitHub username in the README.md file. This is a minor documentation step and doesn't affect the functionality of your JavaScript implementation. All checklist requirements have been satisfied, and your solution is approved.

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