代碼：let appState = observable({ time: 11, do:function(){
appState.time=12
}
});const App = observer(class app extends React.Component {
componentDidUpdate(){ console.log('1')
}
render(){ return (<h2 onClick={appState.do}>Home{appState.time}</h2>;
}
})
ReactDOM.render( <App/>, document.body
);實際上并沒有使用action修飾可以更新到數據，使用action修飾：let appState = observable({ time: 11, do: action(function () {
appState.time = 12;
})
})action才相當于setState，為什么沒有啟用action仍然更新
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