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Re:Vim 101: How to Start Using the Text Editor for Developers by kerkeslager on Thursday October 24, 2019 @11:19AM (#21345508)
gdb for C, Firefox dev tools for JS, ipdb for Python. The Firefox dev tools are probably the weakest of these, but the other two handle everything you mention just fine.
Re:Vim 101: How to Start Using the Text Editor for Developers by colordrops on Thursday October 24, 2019 @11:48AM (#21345804)
cgdb is nice too, adds syntax highlighting and vim-like keybindings.