layui/src/module/textarea/index.vue

<template>
  <textarea
    :value="modelValue"
    :placeholder="placeholder"
    :name="name"
    class="layui-textarea"
    @input="updateValue"
  />
</template>

<script setup name="LayTextarea" lang="ts">
import { defineProps, defineEmits } from 'vue'

const props = defineProps<{
  name?: string
  modelValue?: string
  placeholder?: string
}>()

const emit = defineEmits(['update:modelValue'])

const updateValue = function (event: InputEvent) {
  emit('update:modelValue', (event.target as HTMLInputElement).value)
}
</script>