What does $($(this)) mean?

Question

I saw some code around the web that uses the following statement

if ($($(this)).hasClass(\"footer_default\")) {
      $(\'#abc\')
        .appendTo($(this))
             


        

Answer 1

There is no specific need for double-wrapping and $($(this)) is exactly the same as $(this).

That said, I once found this double-wrapping in one file in my project, committed by another developer. Tracking the changes through revision, turned out that it started as $($(this).find('selector').first()) - that is, the result of some selector was wrapped to create a new object. Then for whatever reasons, the selector was removed and only the double-wrapping of this remained. Needless to say, on the next commit it was changed to $(this).