element-plus/docs/examples/select/disabled-option.vue

<template>
  <el-select v-model="value" placeholder="Select">
    <el-option
      v-for="item in options"
      :key="item.value"
      :label="item.label"
      :value="item.value"
      :disabled="item.disabled"
    >
    </el-option>
  </el-select>
</template>

<script lang="ts">
import { ref, defineComponent } from 'vue'

export default defineComponent({
  setup() {
    return {
      options: ref([
        {
          value: 'Option1',
          label: 'Option1',
        },
        {
          value: 'Option2',
          label: 'Option2',
          disabled: true,
        },
        {
          value: 'Option3',
          label: 'Option3',
        },
        {
          value: 'Option4',
          label: 'Option4',
        },
        {
          value: 'Option5',
          label: 'Option5',
        },
      ]),
      value: ref(''),
    }
  },
})
</script>