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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

Go to the benchmark
Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2861.0 Safari/537.36
Chrome 55
Mac OS X 10.11.6
Other
8 years ago
Test name Executions per second
concat() 3927271.0 Ops/sec
plus_operator 4031846.5 Ops/sec
Script Preparation code:
AخA
 
var string1 = "Hello ";
var string2 = " world!";
Tests:

  • concat()

     
    var message = string1.concat(string2);

  • plus_operator

     
    var message = string1 + string2;