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Run results for:
Javascript 'concat()' vs '+' for strings
Testing the performance difference between concat() and the + operator for strings in javascript
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<iframe src="https://measurethat.net/Embed?id=519198" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:109.0) Gecko/20100101 Firefox/115.0
Browser:
Firefox 115
Operating system:
Mac OS X 10.13
Device Platform:
Desktop
Date tested:
2 years ago
Test name
Executions per second
concat()
9856.6 Ops/sec
plus_operator
8691.4 Ops/sec
Script Preparation code:
var string1 = "Hello "; var string2 = " world!";
Tests:
concat()
for(i = 0; i < 1000; i++) { string1.concat(string2); }
plus_operator
for(i = 0; i < 1000; i++) { string1 + string2; }