Run results for: empty an array in JavaScript?

Run details:

User agent: Mozilla/5.0 (Linux; Android 11; Mi 10 Pro Build/RKQ1.200826.002; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/77.0.3865.120 MQQBrowser/6.2 TBS/045613 Mobile Safari/537.36 MMWEBID/8538 MicroMessenger/8.0.3.1880(0x28000339) Process/tools WeChat/arm64 Weixin NetType/4G Language/zh_CN ABI/arm64

Browser: QQ Browser Mobile 6

Operating system: Android

Device Platform: Mobile

Date tested: 2 years ago

Test name	Executions per second
Just instantiate new array	15778.5 Ops/sec
Set length to zero	15765.7 Ops/sec
Splice	13318.4 Ops/sec
Pop all values	10477.1 Ops/sec

Tests:

Just instantiate new array
var size = 10000; var arr1 = []; for (var i = 0; i < size; i++){ arr1.push(i); } arr1 = [];
Set length to zero
var size = 10000; var arr2 = []; for (var i = 0; i < size; i++){ arr2.push(i); } arr2.length = 0;
Splice
var size = 10000; var arr3 = []; for (var i = 0; i < size; i++){ arr3.push(i); } arr3.splice(0, arr3.length);
Pop all values
var size = 10000; var arr4 = []; for (var i = 0; i < size; i++){ arr4.push(i); } while(arr4.length > 0){ arr4.pop(); }

Run results for: empty an array in JavaScript?

Based on question on http://stackoverflow.com/questions/1232040/how-do-i-empty-an-array-in-javascript

Just instantiate new array

Set length to zero

Splice

Pop all values