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react中关于React.cloneElement和 React.Children.only 的使用场景  #3

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@zzz6519003
render() {
   return React.cloneElement(React.Children.only(this.props.children), {
        onTouchStart: this._onTouchStart.bind(this),
        onTouchMove: this._onTouchMove.bind(this),
        onTouchCancel: this._onTouchCancel.bind(this),
        onTouchEnd: this._onTouchEnd.bind(this)
    });
  }

React.cloneElement(React.Children.only(this.props.children), {
这句想达到什么效果

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