use ref比声明变量的优势在哪

stackoverflow.com/questions/6…

mlog.club/article/532…

  handleOpenOperationRecord.current = (openTab?: OpenTab) => {
    openOperationRecordDrawer({
      // TODO options 改为后端下发
      opOptions: getOptions(opPrivilegeCodes, isCrossBorder, 'op'),
      riskOptions: getOptions(riskPrivilegeCodes, isCrossBorder, 'risk'),
      openTab,
    });
  };

     const handleOpenOperationRecord = (openTab?: OpenTab) => {
     openOperationRecordDrawer({
       opOptions: getOptions(opPrivilegeCodes, isCrossBorder, 'op'),
       riskOptions: getOptions(riskPrivilegeCodes, isCrossBorder, 'risk'),
       openTab,
     });
   };

对比上下两种写法，都是正确的：第一种，把handleOpenOperationRecord传给子组件，子组件不会因为他的current变化而刷新。第二种，如果handleOpenOperationRecord被重新赋值，那么子组件会发生相应的变化