AB Check

/***************************************************************************************
*                                                                                      *
*                  CODERBYTE BEGINNER CHALLENGE                                        *
*                                                                                      *
*  AB Check                                                                            *
*  Using the JavaScript language, have the function ABCheck(str) take the str          *
*  parameter being passed and return the string true if the characters a and b are     *
*  separated by exactly 3 places anywhere in the string at least once                  *
*  (ie. "lane borrowed" would result in true because there is exactly three characters *
*  between a and b). Otherwise return the string false.                                *
*                                                                                      *
*  SOLUTION                                                                            *
*  I am goint to use a RegExp to see if the patter [a...b] exists anywhere in the      *
*  string. If it does then return true else return false.                              *
*                                                                                      *
*  Steps for solution                                                                  *
*    1) Use RegExp pattern to search string for pattern a...b                          *
*    2) If found return true                                                           *
*    3) Else return false                                                              *
*                                                                                      *
***************************************************************************************/
function ABCheck(str) { 

  var match = str.search(/a...b/);
  if (match > -1) {
    return "true";
  }
  else {
    return "false";
  }
         
}