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How do you run Javascript program like 

function foo() {
  alert('foo');
}

foo();

without an html file like you can do in jsfiddle. Can you do that in an editor?

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  • You could use the terminal in the code editor. Commented Oct 21, 2018 at 19:33
  • Or install NodeJs and run the code from the command line. Commented Oct 21, 2018 at 20:02

1 Answer 1

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You have several options:

  • Find a Javascript-console plugin for your text-editor or IDE
  • Run your snippet from the console in your browser's developer tools
  • As Andy said, run it from a local NodeJS server

EDIT: If you're on MacOS, this might help you even more: https://www.quora.com/How-do-I-run-my-JavaScript-code-in-Sublime-Text-console

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