Run results for: Prototype chains

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36

Browser: Chrome 131

Operating system: Linux

Device Platform: Desktop

Date tested: 3 months ago

Test name	Executions per second
level 5	82417.3 Ops/sec
level 4	82477.9 Ops/sec
level 3	81940.3 Ops/sec
level 2	81243.1 Ops/sec
level 1	80083.8 Ops/sec

Script Preparation code:

const level1 = {a: 1};
const level2 = {b: 1};
const level3 = {c: 1};
const level4 = {d: 1};
const level5 = {e: 1};

level2.__proto__ = level1;
level3.__proto__ = level2;
level4.__proto__ = level3;
level5.__proto__ = level4;

Tests:

level 5
for (var i=0; i<10000; i++) { level5.a; }
level 4
for (var i=0; i<10000; i++) { level4.a; }
level 3
for (var i=0; i<10000; i++) { level3.a; }
level 2
for (var i=0; i<10000; i++) { level2.a; }
level 1
for (var i=0; i<10000; i++) { level1.a; }

Run results for: Prototype chains

level 5

level 4

level 3

level 2

level 1