Timeline for javascript var statement and performance
Current License: CC BY-SA 3.0
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14 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Mar 12, 2012 at 19:30 | vote | accept | frenchie | ||
| Mar 12, 2012 at 18:47 | history | edited | gdoron | CC BY-SA 3.0 |
deleted 2 characters in body; edited tags
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| Mar 12, 2012 at 18:47 | answer | added | josh3736 | timeline score: 1 | |
| Mar 12, 2012 at 18:45 | answer | added | Marshall | timeline score: 6 | |
| Mar 12, 2012 at 18:43 | answer | added | yas | timeline score: 0 | |
| Mar 12, 2012 at 18:33 | comment | added | Chad | Assigning a value at declaration is significantly faster (see this jsPerf).However whether you use multiple var statements or not, doesn't really matter. | |
| Mar 12, 2012 at 18:33 | comment | added | josh3736 |
Note that option 1 is not really what you're calling it. There are actually two assignments: once when you declare the variable and assign null to it, then again when you assign SomeValue.
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| Mar 12, 2012 at 18:30 | comment | added | Ortiga | There are so many thing that can impact your performance further, that you shouldn't bother with this... Just do whatever you find easier to read, as this won't impact performance. Plus, it may vary depending on what JS engine you are using. | |
| Mar 12, 2012 at 18:30 | answer | added | Cᴏʀʏ | timeline score: 0 | |
| Mar 12, 2012 at 18:29 | answer | added | zzzzBov | timeline score: 0 | |
| Mar 12, 2012 at 18:28 | comment | added | c0deNinja | i dunno about performance differences but stylistically i would go with option 3. | |
| Mar 12, 2012 at 18:27 | answer | added | Ayman | timeline score: 0 | |
| Mar 12, 2012 at 18:26 | answer | added | gdoron | timeline score: 17 | |
| Mar 12, 2012 at 18:24 | history | asked | frenchie | CC BY-SA 3.0 |