杂React-Native

类的创建方式有两种

var YTK_R_Project = React.createClass
和
class RootView extends Component //ES6 写法 

目前发现的区别是在

写方法的命名

React.createClass是  foo: function(){};

extend 的是 foo(){};

初始化函数

React.createClass是
    getInitialState: function() {
     return {
       selectedTab: 'practice',
     };
   },

如果在extend类中写 getInitialState(){}; 并不会call，
参考类的创建方式有两种

var YTK_R_Project = React.createClass
和
class RootView extends Component ////ES6 写法

目前发现的区别是在
######写方法的命名

React.createClass是 foo: function(){};

extend 的是 foo(){};

######初始化函数

React.createClass是
getInitialState: function() {
return {
selectedTab: 'practice',
};
},

ViewDidAppear
 
‘I find a way to simulate viewDidAppear and viewDidDisappear in UIKit,
but i'm not sure if it's a "right" way.’


[http://stackoverflow.com/questions/29619673/navigatorios-is-there-a-viewdidappear-or-viewwillappear-equivalent](http://stackoverflow.com/questions/29619673/navigatorios-is-there-a-viewdidappear-or-viewwillappear-equivalent)

参考链接:
https://facebook.github.io/react/blog/2015/01/27/react-v0.13.0-beta-1.html#es6-classes
http://stackoverflow.com/questions/31709258/why-is-getinitialstate-not-being-called-for-my-react-clas