Why IntelliJ Idea doesn’t recognize the dollar operator of JQuery?

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I have found the solution by myself.

  1. First press CTRL + ALT + S and go to settings.
  2. Then click from the menu Languages & Frameworks
  3. Select JavaScript from the section below and select Libraries
  4. In the open menu on the right, click on the Download button and select jquery from the list.
  5. Download it and apply. It is done.

downloading a library with IntelliJ

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