字符串写法

<script setup>
import { ref, onMounted } from 'vue'
import './index.css'const input = ref(null)onMounted(() => {input.value.focus()
})
</script><template><div class="m-home-wrap"><input ref="input" /><div class="m-home-demo"></div></div>
</template><style></style>

函数写法

<script setup>
import { ref, onMounted } from 'vue'
import './index.css'const input = ref(null)onMounted(() => {input.value.focus()
})
</script><template><div class="m-home-wrap"><input:ref="(el) => {input = el}"/><div class="m-home-demo"></div></div>
</template><style></style>

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