JQuery : What is the difference between “var test” and “var $test” [duplicate]

Answer 1

$test is a convention used to indicate that this variable is a jQuery object and you can call the standard functions on it while test could be a standard DOM element and you cannot call the val function on it for example.

For example:

var $test = $('#someId');
var test = document.getElementById('#someId');

You can do $test.text(); but you cannot do test.text();