Run results for: Accessing Object Data via Global vs. Argument Reference

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.86 Safari/537.36

Browser: Chrome 73

Operating system: Mac OS X 10.14.3

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
Accessing via Global Reference	17050674.0 Ops/sec
Accessing via Argument Reference	16847966.0 Ops/sec

Script Preparation code:

var globalData = {
  data: {
   property: "value",
  },
};

Tests:

Accessing via Global Reference
function global () { return globalData.data.property; } global();
Accessing via Argument Reference
function argument (arg) { return arg.data.property; } argument(globalData);