How to implement debounced input event handling in Vue?

Vue debouncing uses ref() for immediate input tracking and watch() with lodash.debounce() to throttle API calls, cutting requests by 80%+ on typing.

​Immediate internalModel updates ensure smooth UX while debounced model sync prevents API spam in search/autosave forms.​

Composable pattern works across components; Lodash handles edge cases like rapid focus/blur reliably.

Code

<script setup>
import { ref, watch } from 'vue'
import { debounce } from 'lodash-es'

const internal = ref('')
const model = defineModel()
watch(internal, debounce((val) => model.value = val, 300))
</script>

<template>
  <input v-model="internal" placeholder="Search...">
</template>