05.通过subscribe订阅，实现redux数据响应

05.通过subscribe订阅，实现redux数据响应

const store = createStore(weight)
const watch = () => {
    const cur = store.getState()
    console.log(`stark wang 现在体重为${cur}斤`)
}
store.subscribe(watch)
// watch()
store.dispatch({type:'eat'})
store.dispatch({type:'eat'})
store.dispatch({type:'eat'})
store.dispatch({ type: 'hungry' })

通过 subscribe 订阅一个函数实现数据响应

store.subscribe(watch)