totype

JavaScript performance comparison

Test case created

Preparation code

<script>
  var toTypeSlice = function(obj) {
    return ({}).toString.call(obj).slice(8, -1).toLowerCase();
  }

  var toTypeSlice2 = function(obj) {
    var sdf = ({}).toString.call(obj);
    var idx = sdf.indexOf(' ') + 1;
    return sdf.slice(idx, -1).toLowerCase();
  }

  var toTypeSlice3 = function(obj) {
    var sdf = ({}).toString.call(obj);
    return sdf.slice(sdf.indexOf(' ') + 1, -1).toLowerCase();
  }


  var toTypeSlice4 = function(obj) {
    return ({}).toString.call(obj).slice(({}).toString.call(obj).indexOf(' ') + 1, -1).toLowerCase();
  }

</script>

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Testing in unknown unknown
Test Ops/sec
toTypeSlice
toTypeSlice([])
pending…
toTypeSlice2
toTypeSlice2([])
pending…
toTypeSlice3
toTypeSlice3([])
pending…
toTypeSlice4
toTypeSlice4([])
pending…

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