Run results for: arr = [] or arr.length=0

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.130 Safari/537.36

Browser: Chrome 79

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
length 0	12064.0 Ops/sec
asd	27025.8 Ops/sec

Script Preparation code:

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

Tests:

length 0
var arr=[]; for(i=0; i<1000; i++){ arr.length=0; arr.push(i); } console.log(arr);
asd
var arr=[]; for(i=0; i<1000; i++){ arr=[]; arr.push(i); } console.log(arr);