Preparation code

 
<script>
  Benchmark.prototype.setup = function() {
    var div = document.createElement('div');
    var properValue = "foo&lt;&gt;&#039;&quot;";
    var value;
    
    
    function stringDotLink(str) {
      return String.prototype.link(str).split('"')[1];
    }
    
    function divTextContent(str) {
      div.textContent = "foo<>'\"";
      return div.innerHTML.replace(/'/g,'&#039;').replace(/"/g,'&quot;');
    }
    
    function naiveReplacer(s) {
      if (s==='<') {
        return '&lt;';
      }
      if (s==='>') {
        return '&gt;';
      }
      if (s==="'") {
        return '&#039;';
      }
      if (s==='"') {
        return '&quot;';
      }
    }
    var map={ '<':'&lt;', '>':'&gt', "'":'&#039;', '"':'&quot;' };
    function mapReplacer(s) {
      return map[s] || s;
    }
    function regexpSingleNaive(str) {
      return str.replace(/[<>'"]/g, naiveReplacer);
    }
    function regexpSingleMap(str) {
      return str.replace(/[<>'"]/g, naiveReplacer);
    }
    
    function regexpMultiple(str) {
      return (str.replace(/</g, '&lt;')
        .replace(/>/g, '&gt;')
        .replace(/'/g, '&#039;')
        .replace(/"/g, '&quot;'));
    }
  };
</script>

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value = stringDotLink("foo<>'\"");
if (value!==properValue) {
  console.log(value, properValue);
  throw("Incorrect: "+value+" !== "+properValue);
}

value = divTextContent("foo<>'\"");
if (value!==properValue) {
  console.log(value, properValue);
  throw("Incorrect: "+value+" !== "+properValue);
}

value = regexpSingleNaive("foo<>'\"");
if (value!==properValue) {
  console.log(value, properValue);
  throw("Incorrect: "+value+" !== "+properValue);
}

value = regexpSingleMap("foo<>'\"");
if (value!==properValue) {
  console.log(value, properValue);
  throw("Incorrect: "+value+" !== "+properValue);
}

value = regexpMultiple("foo<>'\"");
if (value!==properValue) {
  console.log(value, properValue);
  throw("Incorrect: "+value+" !== "+properValue);
}

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Revisions

You can edit these tests or add even more tests to this page by appending /edit to the URL. Here’s a list of current revisions for this page:

• Revision 1: published by Jason Miller on 18th October 2012
• Revision 2: published by Jason Miller on 16th February 2013
• Revision 3: published by Jason Miller on 14th May 2013

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