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30. JavaScript Data Type: Symbol - for...in, global symbols, system symbols

#MissXing #JavaScript #JavaScriptObject In this video, we continue introduce symbols - why symbols are considered as hidden properties? We explained use for...loop, object.keys. We also introduced global symbol registry, and system symbols in a brief way. Source code: https://github.com/TinaXing2012/javascript-for-beginners/blob/main/objects/symbols-demo.html

Видео 30. JavaScript Data Type: Symbol - for...in, global symbols, system symbols автора JavaScript Легко и Просто
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