String concatenation vs Regex

JavaScript performance comparison

Revision 4 of this test case created by

Preparation code


      
      <script>
Benchmark.prototype.setup = function() {
  var id = 1;

};
</script>

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
String concatenation
'[data-id="' + id + '"]'
pending…
Regex
'[data-id="%d"]'.replace(/%d/, id)
pending…
String join
['[data-id="', id, '"]'].join('')
pending…
Concatenate using for loop
var items = ['[data-id="', id, '"]']
var result = '';
for(var i = 0, ii = items.length; i < ii; i++) {
  result += items[i];
}
pending…
Replace
'[data-id=":id"]'.replace(':id', id)
pending…
ForEach
var items = ['[data-id="', id, '"]']
var result = '';
items.forEach(function(item) {
  result += item;
});
pending…

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