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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=586418" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/132.0.0.0 Safari/537.36
Browser:
Chrome 132
Operating system:
Windows
Device Platform:
Desktop
Date tested:
one year ago
Test name
Executions per second
concat()
43584.9 Ops/sec
plus_operator
47679.7 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; }