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JavaScript jQuery Basics Working with jQuery Collections jQuery-Specific Selectors

Posted by Ming Chi Wong
Ming Chi Wong
2,909 Points

The purpose of $, in const$(element).

I don't quite understand why they use $ at the beginning of constant$(element)?

1 Answer

Steven Parker
Steven Parker
231,261 Points
Steven Parker
Steven Parker
231,261 Points

The $ is a convention for jQuery. So while not technically necessary, it's common to use one at the beginning of any variable name that will be used to reference a jQuery object.

It's also an abbreviation for jQuery itself, so when you put something in parentheses after a single $, it calls jQuery and passes what's between the parentheses as an argument. So for example:

const $obj = $(element);

This would pas "element" to jQuery, which will convert it into a jQuery object, and then assign that object to the variable "$obj".