Run results for: I vs J - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.106 Safari/537.36

Browser: Chrome 51

Operating system: Windows 7

Device Platform: Other

Date tested: 8 years ago

Test name	Executions per second
IJ	10.0 Ops/sec
JI	9.3 Ops/sec

Script Preparation code:

var arr = [];
for (var x = 0; x < 1000; x++)
{
 arr[x]=[]; 
}

AخA
 
var arr = [];for (var x = 0; x < 1000; x++){ arr[x]=[]; }

Tests:

for (var i=0; i < 1000; i++)
{
 for (var j=0; j < 1000; j++)
 {
  arr[i][j]=i*j; 
 }
}

 
for (var i=0; i < 1000; i++){ for (var j=0; j < 1000; j++) {  arr[i][j]=i*j;  }}

for (var i=0; i < 1000; i++)
{
 for (var j=0; j < 1000; j++)
 {
  arr[j][i]=i*j; 
 }
}

 
for (var i=0; i < 1000; i++){ for (var j=0; j < 1000; j++) {  arr[j][i]=i*j;  }}