def value=(value)
      case tag_name
      when "textarea"
        @_node.setText("")
        type(value)
      when "input"
        if file_input?
          @_node.setValueAttribute(value)
        else
          @_node.setValueAttribute("")
          type(value)
        end
      end
    end
def value=(value)
      case tag_name
      when "textarea"
        @_node.setText("")
        type(value)
      when "input"
        if file_input?
          @_node.setValueAttribute(value)
        else
          @_node.setValueAttribute("")
          type(value)
        end
      end
    end
Set the value of the form input.

 @param [String] value