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Run results for:
Array fill vs for i loop
People tend to use array fil and then foreach, we know foreach is faster than a for loop, but is it also faster if you use array fill first?
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<iframe src="https://measurethat.net/Embed?id=567938" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:132.0) Gecko/20100101 Firefox/132.0
Browser:
Firefox 132
Operating system:
Windows
Device Platform:
Desktop
Date tested:
one year ago
Benchmark engine:
Benchmark.js
fill and foreach
126K/s
for
16K/s
View exact numbers
Test name
Executions per second
✓
fill and foreach
126,133 Ops/sec
for
15,949 Ops/sec
Script Preparation code:
var iterations = 10000; var arrayTest = new Array(iterations);
Tests:
for
for (i = 0; i < iterations; i++) { arrayTest[i] = 0 }
fill and foreach
arrayTest.fill(0)