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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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Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.135 Safari/537.36
Chrome 84
Mac OS X 10.15.6
Desktop
3 years ago
Test name Executions per second
concat() 7898.5 Ops/sec
plus_operator 7727.5 Ops/sec
plus_eq_operator 3007.9 Ops/sec
Website performance monitoring
Script Preparation code:
Tests:

  • concat()

  • plus_operator

  • plus_eq_operator