title: JSON empty string
body: <p>why does the JSON.stringify-Function converts a string.Empty ("") to a "null"-String?
  The problem, why i'm not using:</p>
  
  <pre><code>JSON.parse(json, function(key, value) {
      if (typeof value === 'string') {
          if (value == 'null')
              return '';
          return value;
      }
  });
  </code></pre>
  
  <p>...is, if somebody really write "null" (is very unlikely, but possible), i have a problem to...</p>
  
  <p>thank for each answer!</p>