building up a string

JavaScript performance comparison

Test case created

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    var d = "1";
    var m = "fds";
    var y = "0987";
    var result;
};
</script>

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Testing in unknown unknown
Test Ops/sec
if-else
if (1 == 1) {
  result = [d, m, y].join(" ");
} else {
  result = [m, y].join(" ");
}
return result;
pending…
one if
result = [m, y];
if (1 == 1) {
  result.shift(d);
}
result = result.join(" ");
pending…
concat
result = [m, y].join(" ");
if (1 == 1) {
  result = d + result;
}
pending…

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