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为什么在React用useState保存Echarts实例对象后echarts渲染的图表会消失？

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为什么在React用useState保存Echarts实例对象后echarts渲染的图表会消失？

image.png
先进行http请求,获得数据后用通过自定义的函数创建Echarts实例，并接收返回实例对象。
image.png
使用自定义的useState存储实例对象后图表消失了,但是可以通过控制台打印出来,有大佬知道这是为什么吗


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以解决，用useRef保存echarts实例即可


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