Do I need to put a dollar before variable names with javascript?

Question

I have the following code:

var formSubmitHandler = function (link, form) {

    //e.preventDefault();
    var $form = form;
    var val = $form.valid();
             


        

Answer 1

That is not neccessary. The dollar sign before a variable is most of the times used as an indication it is a JQuery variable. JQuery uses the dollar sign as a shortcut. Using it in a variable name has no extra meaning other than the aesthetic meaning for the developer that it is a JQuery object.