Run results for: Empty an object in JavaScript (with baseline)

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/115.0

Browser: Firefox 115

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Script Preparation code:

var size = 100000;
var o = {};
for (var i = 0; i < size; i++) {
  o[`prop${i}`] = Math.random();
}
var json = JSON.stringify(o);

Tests:

Instantiate new object
var o1 = JSON.parse(json); o1 = {};
Delete all properties
var o2 = JSON.parse(json); Object.keys(o2).forEach(k => delete o2[k]);
JSON.parse baseline
var o0 = JSON.parse(json);