react学习入门

先在在学习react，react是faceBook推出的框架，因为虚拟DOM使页面性能提高很大，特别react Native非常适合移动端，现做一个学习总结：

1.react 获取DOM的两种方式是ReactDOM.findDOMNode,this.refs.xxx。

例如：

let ele = findDOMNode(this.refs.content);
let ele2 = this.refs.content;
···················································································································

<div ref='content'>这是我DOM元素里面的内容</div>
···················································································································
控制器输出的内容就是 这是我DOM元素里面的内容，

在这里refs 是获取DOM元素的内容，ref是设定DOM的content的内容，两者不能搞反了，否则会报错ref is not defined