What is $field in jQuery?

Question

I am looking at some javascript that uses jQuery and see things like this

this.dropdownController.setWidth(this.$field.innerWidth());

But I am not sure whether $field is something special or just a custom-defined object somewhere in the scripts.

Does $field have a special meaning?

Answer 1

$field is nothing more than a property defined on this. It has nothing to do with jQuery. If it's something special, it's going to be related to whatever this is.