query str parsing: regex vs split

JavaScript performance comparison

Revision 11 of this test case created

Info

http://stevenbenner.com/2010/03/javascript-regex-trick-parse-a-query-string-into-an-object/

Preparation code

<script>
  var query = 'http://your.domain/product.aspx?category=4&product_id=2140&query=lcd+tv';
 
  function split() {
    var queryString = {};
    query.split("?").pop().split("&").forEach(function (prop) {
      var item = prop.split("=");
      queryString[item.shift()] = item.shift();                                                                                                                                                                                                                                            
    });
    return queryString;
  }
 
  function regex() {
    var queryString = {};
    query.replace(/([^?=&]+)(=([^&]*))?/g, function ($0, $1, $2, $3) {
      queryString[$1] = $3;
    });
 
    return queryString;
  }
 
  function regexp() {
    var queryString = {};
    query.replace(new RegExp("([^?=&]+)(=([^&]*))?", "g"), function ($0, $1, $2, $3) {
      queryString[$1] = $3;
    });
 
    return queryString;
  }
</script>

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Test Ops/sec
regex
regex()
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split
split()
pending…
regexp
regexp()
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