Comparing-primitive-to-object-string-numbers

JavaScript performance comparison

Test case created by Felipe

Preparation code

str1 + str3 = <div id="id1"></div><br>
str2 + str3 = <div id="id2"></div>
      
<script>
Benchmark.prototype.setup = function() {
      var str1 = "Hello";
      var str2 = new String("Hello");
      var str3 = new String(" there");
      
      var i = "(idle)",
          k = "(idle)";
  

};

Benchmark.prototype.teardown = function() {
  var x = document.getElementById("id1"); x.innerHTML = i;
  var y = document.getElementById("id2"); y.innerHTML = k;

};
</script>

Preparation code output

str1 + str3 = <div id="id1"></div><br> str2 + str3 = <div id="id2"></div>

Test runner

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
Primitive and number
  var i = str1 + 10;
pending…
Object and number
  var k = str2 + 10;
pending…

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str1 + str3 =

str2 + str3 =