Maintaining a sorted array vs. push() and sort()
JavaScript performance comparison
Info
The actual usecase isn't to sort for every insertion. Either you keep a sorted array, or you sort it at the end.
I use linear search as a baseline.
Preparation code
<script>
function findBSearch(n, array) {
var low = 0, high = array.length;
while (low < high) {
var mid = (low + high) >>> 1;
array[mid] < n ? low = mid + 1 : high = mid;
}
return low;
};
function findIndexOf(el, arr) {
for (var i = 0; arr[i] < el; i++) {}
return i;
}
</script>
<script>
Benchmark.prototype.setup = function() {
// Pseudorandom data.
// I keep it the same for the sake of comparison.
var input = [];
for(i=0;i<300000;i++) input.push(Math.floor(Math.random()));
};
</script>
Test runner
Warning! For accurate results, please disable Firebug before running the tests. (Why?)
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Test  Ops/sec  

push() and sort() 

pending… 
Linear search 

pending… 
Binary search 

pending… 
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Revisions
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 Revision 1: published
 Revision 2: published and last updated
 Revision 3: published
 Revision 4: published by espadrine
 Revision 5: published
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 Revision 8: published
 Revision 9: published
 Revision 21: published
 Revision 22: published
 Revision 23: published
 Revision 24: published
1 comment
Ben Adams commented : ∞
Broken test in many ways (test input data is 30,000 zeros)
Improved tests in version 22 http://jsperf.com/insertintosorted/22