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Run results for:
String.concat vs array.join
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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/141.0.0.0 Safari/537.36
Browser:
Chrome 141
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
6 months ago
Test name
Executions per second
String concatentation
53769.2 Ops/sec
Array join
48846.0 Ops/sec
Script Preparation code:
var str = ""; var i; var sArr = [];
Tests:
String concatentation
for (i = 1000; i > 0; i--) { sArr[i] = "String concatenation. "; } str = ''.concat(...sArr);
Array join
for (i = 1000; i > 0; i--) { sArr[i] = "String concatenation. "; } str = sArr.join("");