[Learn with VSCode] JavaScript for Beginners #19 `strict mode` in JavaScript

Published: 09 June 2025
on channel: Code Spark Lab

This video explains `strict mode` in JavaScript.
You can learn each example by previewing it in Visual Studio Code.

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💡 Playlist for this series
• [Learn with VSCode] JavaScript for Beginners

🕐 Video contents
00:00 Start
00:34 `strict mode` in JavaScript
01:08 - Enabling `strict mode`
02:13 - Key features and differences of `strict mode`
02:25 - Prohibition of implicit global variables
02:57 - Restriction on the use of reserved words
03:24 - Changes in the behavior of `this`
03:56 - Prohibition of deleting non-deletable properties
04:21 - Prohibition of duplicate parameter names
04:44 - Prohibition of `with` statement
05:04 - Advantages of `strict mode` / Improved error detection
05:32 - Improved performance
05:47 - Enhanced code security
06:05 - Compatibility and considerations
06:45 - Conclusion

#JavaScript #Basics

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