react assembly constructed in three ways

1, pure function -

• Component is not instantiated, overall rendering performance gains
• Component can not access thisobjects
• The method of assembly can not access the life-cycle
• Stateless components can only access the input of propsthe same propswill get the same rendering results, there will be no side effects

2，React.createClass

• React.createClass binding function method will automatically lead to unnecessary performance overhead
• React.createClass of mixins is not natural, intuitive

3，React.Component

  react.Component form ES6 to create thereactassembly, is extremely React currently has recommended way to create a state assembly, with respect toReact.createClassbetter achieve code reuse.

　 Binding this application can bind call apply props. a first assembly component when using this super