JavaScript toUpperCase, toLowerCase, concat & Real Form Example with preventDefault (in Sinhala)

Опубликовано: 13 Март 2026
на канале: MCodes Frontend
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JavaScript toUpperCase, toLowerCase, concat & Real Form Example with preventDefault (in Sinhala)

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Welcome to MCodes Frontend YouTube channel. As a passionate senior frontend developer my mission is to give you a better understanding of frontend technologies like HTML , CSS and UI, UX concepts


🌐 ABOUT THIS VIDEO
This video will explain how to use JavaScript toUpperCase , toLowerCase, Concat & preventDefault() method for strings

⏱️ Timestamps,

00:00 - Intro
01:22 - toUpperCase method
02:37 - toLowerCase method
03:35 - Concat method
05:48 - Demo
12:50 - preventDefault()
16:05 - Wrap up
16:44 - Outro

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🌐 Related tags
#javascript #css #webdevelopment