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Run results for:
Map iteration + clearing
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Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Browser:
Chrome 131
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
one year ago
Test name
Executions per second
forEach + clear
17128028.0 Ops/sec
forEach + delete
55826936.0 Ops/sec
for...of + clear
18566516.0 Ops/sec
for...of + delete
74706136.0 Ops/sec
HTML Preparation code:
<!--your preparation HTML code goes here-->
Script Preparation code:
var myMap = new Map(); for (let i = 0; i < 200; i++) { const key = {}; const value = {value: Math.random()}; myMap.set(key, value); }
Tests:
forEach + clear
myMap.forEach((value, key) => { console.log(value, key); }); myMap.clear();
forEach + delete
myMap.forEach((value, key) => { console.log(value, key); myMap.delete(key); });
for...of + clear
for (const entry of myMap) { console.log(entry[1], entry[0]); } myMap.clear();
for...of + delete
for (const entry of myMap) { console.log(entry[1], entry[0]); myMap.delete(entry[0]); }