Run results for: shallow copy of array - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:93.0) Gecko/20100101 Firefox/93.0

Browser: Firefox 93

Operating system: Ubuntu

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
slice	11879.8 Ops/sec
push-apply	6931.0 Ops/sec
the ...operator	2230.7 Ops/sec
for-push	2406.2 Ops/sec
concat	3903.3 Ops/sec

Script Preparation code:

arr0 = [];
for(var i=0;i<10000;i++){
  arr0.push("var "+i);
}

Tests:

slice
var other = arr0.slice()
push-apply
var other = []; Array.prototype.push.apply(other, arr0);
the ...operator
var other = [...arr0];
for-push
var other = []; for(var i=0;i<arr0.length;i++){ other.push(arr0[i]); }
concat
var other = []; other = other.concat(arr0);

;