Run results for: JS / jQuery selector variables

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:48.0) Gecko/20100101 Firefox/48.0

Browser: Firefox 48

Operating system: Mac OS X 10.10

Device Platform: Other

Date tested: 8 years ago

Test name	Executions per second
#A	472041312.0 Ops/sec
#B	154626.1 Ops/sec
#C	468442816.0 Ops/sec
#D	21302856.0 Ops/sec
#E	541785600.0 Ops/sec
#F	537615744.0 Ops/sec

HTML Preparation code:

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.0/jquery.min.js"></script>

AخA
 
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.0/jquery.min.js"></script>

Script Preparation code:

$body = $('body');
bodyEl = document.body;

var app = {};
app.getBody = function() {
  return $body;
}
app.getBody2 = function() {
  return $('body');
}

​x
 
$body = $('body');bodyEl = document.body;​var app = {};app.getBody = function() {  return $body;}app.getBody2 = function() {  return $('body');}

Tests:

#A
$body
$body
#B
$('body')
$('body')
#C
bodyEl
bodyEl
#D
document.body
document.body
#E
app.getBody
app.getBody
#F
app.getBody2
app.getBody2

Run results for: JS / jQuery selector variables

#A

#B

#C

#D

#E

#F