Opened 13 years ago
Closed 12 years ago
#5299 closed enhancement (wontfix)
odd & even methods improvements
| Reported by: | dsonet | Owned by: | john |
|---|---|---|---|
| Priority: | minor | Milestone: | 1.4 |
| Component: | selector | Version: | 1.3 |
| Keywords: | division bitwise | Cc: | |
| Blocked by: | Blocking: |
Description
I notice here use % to test if the number is even or odd. I suggest we use bitwise operator here to get the best performance. So, we can rewrite them as:
even: function(elem, i){
return !( i & 1 );
}, odd: function(elem, i){
return ( i & 1 ) === 1;!!(i & 1)
},
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There is no effective performance difference between these two operations. jsperf test