jQuery CheatSheet

Selectors

$("div") - all <div> tags
$("#surname") - element id="surname"
$(".warning") - element class="warning"

jQuery Object (array like):

$("body").length - there is only 1 body
$("body")[0] - <body>..</body>

$("body").size() - object-like equivalent of length
$("body").get(0) - <body>..</body>

$("body").jquery - 2.2.4 exists is a jQuery object
$("body").selector - "body"
$("body").context "#document"

$(".tab").length // 12 tab elements