Run results for: Object.values overhead cost

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36

Browser: Chrome 133

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Use shared Object.values

368K/s

Call Object.values on each execution

18K/s

View exact numbers

Test name	Executions per second
✓ Use shared Object.values	368,156 Ops/sec
Call Object.values on each execution	17,581 Ops/sec

Script Preparation code:

var myObj = {};
for (var i = 0; i < 1000; i++) {
    myObj['val' + i] = 'val' + i;
}
var myObjValues = Object.values(myObj);

Tests:

Call Object.values on each execution
var curObjValues = Object.values(myObj); var myStr = ''; for (var i = 0; i < curObjValues.length; i++) { myStr += curObjValues[i]; }
Use shared Object.values
var curObjValues = myObjValues; var myStr = ''; for (var i = 0; i < curObjValues.length; i++) { myStr += curObjValues[i]; }