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Run results for: foreach vs for loop - kostia

foreach vs for loop

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Run details:
Mozilla/5.0 (iPad; CPU OS 16_1_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.1 Mobile/15E148 Safari/604.1
Mobile Safari 16
iOS 16.1.1
Tablet
2 years ago
Test name Executions per second
for loop 50750.0 Ops/sec
foreach loop 53120.9 Ops/sec
Script Preparation code:
AخA
 
function generateTestArray() {
    const arr = [Array(50000).keys()];
    return arr;
}
Tests:

  • for loop

    ​x
     
    const array = generateTestArray();
    ​
    console.time("for");
    for(let i=0; i<array.length; i++) {}
    console.time("for end");

  • foreach loop

     
    const array = generateTestArray();
    ​
    console.time("foreach");
    array.forEach(value=>{});
    console.time("foreach end");