开发者工具

          "oneA componentWillMount",
          "oneA render",
          "twoA componentWillMount",
          "twoA render",
          "oneA componentDidMount",
          "twoA componentDidMount",

          'oneA componentWillUnmount',
          'oneB componentWillMount',
          'oneB render',
          'twoA componentWillUnmount',
          'twoB componentWillMount',
          'twoB render',

          "oneB componentDidMount",
          "twoB componentDidMount"