您可以在进入页面时使用useState钩子来初始化state，然后在需要给setXxx赋值的地方调用setState方法进行赋值。具体代码如下：
import React, { useState } from 'react';
function YourComponent() {
const [serviceSubItem, setServiceSubItem] = useState({}); // 初始化state
// 在需要给setXxx赋值的地方调用setState方法
const handleSetXxx = () => {
setServiceSubItem({...serviceSubItem, xxx: 'yourValue'});
}
return (
<div>
{addedServices.length > 0 && (
<div>
{addedServices[state.serviceTabIndex].valueList &&
addedServices[state.serviceTabIndex].valueList.length > 0 &&
addedServices[state.serviceTabIndex].valueList.map((serviceSubItem: any, idx: number) => {
return renderServiceBaseItem(serviceSubItem, idx);
})}
</div>
)}
</div>
);
}
这样，当进入页面时，即可将serviceSubItem赋初值为空对象，并且在需要时调用setServiceSubItem方法对其进行更新赋值。请根据您实际的业务逻辑和需求进行相应的修改。
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