Run results for: empty an array in JavaScript?

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:59.0) Gecko/20100101 Firefox/59.0

Browser: Firefox 59

Operating system: Windows

Device Platform: Other

Date tested: 2025 years ago

Script Preparation code:

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

Tests:

Just instantiate new array
var arr = Array.from(origArr); arr = [];
Set length to zero
var arr = Array.from(origArr); arr.length = 0;
Splice
var arr = Array.from(origArr); arr.splice(0, arr.length);
Pop all values
var arr = Array.from(origArr); while(arr.length > 0){ arr.pop(); }