$scope.validateWindowsPassWord = function (value) {
        if (value === ''){
          return true;
        }
        if($scope.passwordServer.metadata.os_type=='windows' && $scope.passwordServer.metadata.windows_password_policy && $scope.passwordServer.metadata.windows_inject_path) {
          
 
var reg = /^\w{6,10}$/;
          var r = value.match(reg);
          if (r == null) {
            return false;
          }
          var wordReg = /(?=.*[A-Z])(?=.*[a-z])(?=.*[\d])/;
          var word = value.match(wordReg);
          if (word == null) {
            return false
          }
        }
        
 
return true;

      };

\w 等價於 [a-zA-Z0-9_]
\W 等價於 [^a-zA-Z0-9_],就是排除了\w的情況，也就是說它們表示的意思相反