MeasureThat.net

Run results for: Iterate Map entries

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Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Chrome 131
Windows
Desktop
4 months ago
Test name Executions per second
For Entries 64019900.0 Ops/sec
Foreach 43921876.0 Ops/sec
Script Preparation code:
​x
 
var map = new Map();
for (var i = 0; i < 10000; i++) {
    map[Math.random()] = Math.random();
}
​
Tests:

  • For Entries

     
    for (var [key, value] of map.entries()) {
      key
      value
    }

  • Foreach

     
    map.forEach(function(value, key) {
      key
      value
    }, map)