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示例如下：

<template v-for="item in selectList"><el-select v-model="item.value" :ref="el => setRef(el, item)"><el-optionv-for="v in item.options":key="v.value":label="v.label":value="v.value"/></el-select></template>

const state = reactive({selectList:[{ key:'aaa', value:'', options:[{ label:'测试', value:'1' }]},{ key:'bbb', value:'', options:[{ label:'测试', value:'1' }]} ]
})
const { selectList } = toRefs(state)
const selectRef = ref({}) as any;//动态设置ref
const setRef= (el, item) => {if (el) {selectRef.value[item.key] = el}
}console.log(selectRef.value['aaa'])
// 打印出来的值为 动态绑定的选择框aaa的ref属性