gistfile1.js

var pluralForms = {
  "en" : function ( x ) {
    if ( x === 1 ) {
      return 0;
    }
    return 1;
  },
  "fr" : function ( x ) {
    if ( x > 1 ) {
      return 1;
    }
    return 0;
  }
};



var translations = {
  "en" : {
    "somekey" : [ "There is one result.", "There are %s results." ]
  }
  "fr" : {
    "somekey" : [ "Le, there is %s result.", "Le, there are %s results." ]
  }
}

var lang = "en";
var msg = sprintf( translations[ lang ][ "somekey" ][ pluralForms[ lang ]( X ) ], X );