best of string to number conversion (v35)

Revision 35 of this benchmark created by OJ on

Setup

var abc = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, '0', '1', '2', '3', '4', '5', '6', '7', '8', '9'];

Test runner

Ready to run.

Testing in
TestOps/sec
Number()
var result = 0,
    converted;
for (var i = 0, len = abc.length; i < len; ++i) {
  converted = Number(abc[i]);
  if (!isNaN(converted)) {
    result += converted
  }
}
ready
parsetInt()
var result = 0,
    converted;
for (var i = 0, len = abc.length; i < len; ++i) {
  converted = parseInt(abc[i], 10);
  if (!isNaN(converted)) {
    result += converted
  }
}
ready
parseFloat()
var result = 0,
    converted;
for (var i = 0, len = abc.length; i < len; ++i) {
  converted = parseFloat(abc[i]);
  if (!isNaN(converted)) {
    result += converted
  }
}
ready
implicit
var result = 0,
    converted;
for (var i = 0, len = abc.length; i < len; ++i) {
  converted = +abc[i];
  if (!isNaN(converted)) {
    result += converted
  }
}
ready
Left Bit Shift
var result = 0,
    converted;
for (var i = 0, len = abc.length; i < len; ++i) {
  converted = abc[i] << 0;
  if (!isNaN(converted)) {
    result += converted
  }
}
ready
Right Bit Shift
var result = 0,
    converted;
for (var i = 0, len = abc.length; i < len; ++i) {
  converted = abc[i] >> 0;
  if (!isNaN(converted)) {
    result += converted
  }
}
ready
Unsigned Bit Shift
var result = 0,
    converted;
for (var i = 0, len = abc.length; i < len; ++i) {
  converted = abc[i] >>> 0;
  if (!isNaN(converted)) {
    result += converted
  }
}
ready
Bitwise OR
var result = 0,
    converted;
for (var i = 0, len = abc.length; i < len; ++i) {
  converted = abc[i]|0;
  if (!isNaN(converted)) {
    result += converted
  }
}
ready
Bitwise XOR
var result = 0,
    converted;
for (var i = 0, len = abc.length; i < len; ++i) {
  converted = abc[i]^0;
  if (!isNaN(converted)) {
    result += converted
  }
}
ready
Subtract Zero
var result = 0,
    converted;
for (var i = 0, len = abc.length; i < len; ++i) {
  converted = abc[i]-0;
  if (!isNaN(converted)) {
    result += converted
  }
}
ready
Divide By 1
var result = 0,
    converted;
for (var i = 0, len = abc.length; i < len; ++i) {
  converted = abc[i]/1;
  if (!isNaN(converted)) {
    result += converted
  }
}
ready
Multiply By 1
var result = 0,
    converted;
for (var i = 0, len = abc.length; i < len; ++i) {
  converted = abc[i]*1;
  if (!isNaN(converted)) {
    result += converted
  }
}
ready

Revisions

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