jquery – What does dollar mean?


Hello. Can't figure out what this jQuery entry means:

var $tab_title_input = $( "#tab_title"),

As far as I know, the dollar sign usually stands for some kind of function (or the word jQuery ). What did the developers want to say? The example is taken from the jQuery website.


  • The dollar sign is the allowed character for an identifier in the Javascript language.
  • jQuery uses the $ sign as an alias (abbreviation) for the jQuery identifier.

That is, in this particular case

  • $tab_title_input is just a name including a dollar sign,
  • $( "#tab_title") – jQuery function call.
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