Run results for: prepend - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.71 Safari/537.36

Browser: Chrome 54

Operating system: Mac OS X 10.11.6

Device Platform: Other

Date tested: 8 years ago

Test name	Executions per second
push	841.0 Ops/sec
cp	2.0 Ops/sec

Script Preparation code:

 var someBigArray = [];
  var anotherArray = [];
  
  for (var i = 0; i < 10000; i++) {
    someBigArray.push(10);
    anotherArray.push(10);
  }

​x
 
 var someBigArray = [];  var anotherArray = [];    for (var i = 0; i < 10000; i++) {    someBigArray.push(10);    anotherArray.push(10);  }​

Tests:

push
anotherArray.forEach(function(item) { someBigArray.push(item); })
anotherArray.forEach(function(item) {
someBigArray.push(item);
})

var cp = someBigArray.slice(0);
anotherArray.forEach(function(item) {
  cp.push(item);
})

 
var cp = someBigArray.slice(0);anotherArray.forEach(function(item) {  cp.push(item);})