_this vs this

JavaScript performance comparison

Test case created by Jackson Gariety

Preparation code

 
<script>
Benchmark.prototype.teardown = function() {
    {}.testFunction()
};
</script>

Test runner

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Testing in unknown unknown
Test Ops/sec
_this
Object.prototype.testFunction = function() {
  var _this = this

  i = 100000
  while (i--) {
    _this.thing = i
  }
}
pending…
this
Object.prototype.testFunction = function() {
  i = 100000
  while (i--) {
    this.thing = i
  }
}
pending…

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