Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > comp.lang.javascript > #28585
| From | Thomas 'PointedEars' Lahn <PointedEars@web.de> |
|---|---|
| Newsgroups | comp.lang.javascript |
| Subject | Re: Performance question |
| Date | 2015-08-30 22:16 +0200 |
| Organization | PointedEars Software (PES) |
| Message-ID | <6778316.kWqCXO56M2@PointedEars.de> (permalink) |
| References | <dje4uadokf3hpfi2e702t404088avf2d49@4ax.com> <performance-20150830002413@ram.dialup.fu-berlin.de> |
Stefan Ram wrote:
> "Joey@still_Learning.invalid" <Joey@still_Learning.invalid> writes:
>> If I declare a global variable
>>as 'var xxx = document.getElementById('id'),' and use it throughout
>>the script as 'xxx.value or xxx.checked,' does this improve
>>performance?
>
> One does indeed expect such an improvement, but the
> best thing is to measure it under different browsers.
There is no good reason to believe that omitting a function call in favor of
a variable access would not improve performance. It is unnecessary to
measure this.
--
PointedEars
FAQ: <http://PointedEars.de/faq> | SVN: <http://PointedEars.de/wsvn/>
Twitter: @PointedEars2 | ES Matrix: <http://PointedEars.de/es-matrix>
Please do not cc me. / Bitte keine Kopien per E-Mail.
Back to comp.lang.javascript | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
Performance question "Joey@still_Learning.invalid" <Joey@still_Learning.invalid> - 2015-08-29 16:11 -0700
Re: Performance question "Joey@still_Learning.invalid" <Joey@still_Learning.invalid> - 2015-08-30 09:50 -0700
Re: Performance question Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-08-30 22:16 +0200
Re: Performance question Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-08-30 22:21 +0200
csiph-web