[Couchdb Wiki] Update of "View_Snippets" by DougReeder

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The "View_Snippets" page has been changed by DougReeder.
The comment on this change is: improved JavaScript.
http://wiki.apache.org/couchdb/View_Snippets?action=diff&rev1=38&rev2=39

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  }
  }}}
  
- However, if you have more than just a few fields that need to be tested for abcense you can use another approach instead of creating a view for each negation:
+ However, if you have more than just a few fields that need to be tested for absense you can use another approach instead of creating a view for each negation:
  
  {{{#!highlight javascript
  function (doc) {
@@ -694, +694 @@

    for (idx in fields)
    {
      // Does the current field exists?
-     if (typeof eval("doc." + fields[idx]) === void 0)
+     if (!doc.hasOwnProperty(fields[idx]))
      {
        // It doesn't, emit the field name as key
        emit(fields[idx], null);