Class-base components

Functional Component must return some amount of JSX object.

Class based components is mainly for dynamic sources of data.

Class Component has a life-cycle methods, function that placed on out class that will be automatically called at some point.

• 组件生命周期

• React.Component - React

We can define a method on the class

• componentWillMount()

• componentDidMount()

• componentWillReceiveProps

• shouldComponentUpdate

• componentWillUpdate

• componentDidUpdate

• componentWillUnmount