title: How to show warnings, errors, functions, variables in VSCode with JavaScript/Nodejs
body: <p>Is it possible to show warnings (not used variables / typo), errors and an overview about my created variables and functions in an open file?</p>
  
  <p>I have installed the newest Visual Studio Code IDE but if I press <kbd>Ctrl</kbd> + <kbd>P</kbd> and then <kbd>!</kbd>, my VSCode says there are no results. It doesn't know <code>!-command</code> and other commands I found in the internet.</p>
  
  <p>What extension/addon do I have to install to see this? It would be great if I could see this in a separate window without using <kbd>Ctrl</kbd> + <kbd>P</kbd> and if the IDE would mark positions with warnings/errors in my open code as Eclipse-IDE can do.</p>