element-plus/docs/examples/input-number/controlled.vue

<template>
  <el-input-number
    v-model="num"
    :min="1"
    :max="10"
    controls-position="right"
    @change="handleChange"
  />
</template>
<script lang="ts">
import { defineComponent, ref } from 'vue'

export default defineComponent({
  setup() {
    const num = ref(1)
    const handleChange = (value) => {
      console.log(value)
    }
    return {
      num,
      handleChange,
    }
  },
})
</script>