У вашего броузера проблема в совместимости с HTML5
I went to code bootcamp last year and would not do it again. Between falling placement rates, extremely high cost and a weak curriculum, I give you the reality of code bootcamp and why you should consider not going.
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If you're new to JS, I recommend this course by Wes Bos
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JavaScript for Beginners
https://BeginnerJavaScript.com/friend/CODEDRIP
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Here's some more JavaScript courses I took to learn programming
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Javascript: The weird parts
https://bit.ly/37lJ9in
Advanced Javascript
https://bit.ly/39vbIf8
Modern React with Redux
https://bit.ly/2TBEDbI
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My social media
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https://instagram.com/_aaronjack
https://twitter.com/_aaronjack
Note: these are affiliate links, same price for you, but I may make a little $