metadata
id: paginated-queries
title: Paginated / Lagged Queries
ref: docs/framework/react/guides/paginated-queries.md
<script setup lang="ts">
import { ref, Ref } from 'vue'
import { useQuery, keepPreviousData } from '@tanstack/vue-query'
const fetcher = (page: Ref<number>) =>
fetch(
`https://jsonplaceholder.typicode.com/posts?_page=${page.value}&_limit=10`,
).then((response) => response.json())
const page = ref(1)
const { isPending, isError, data, error, isFetching, isPlaceholderData } =
useQuery({
queryKey: ['projects', page],
queryFn: () => fetcher(page),
placeholderData: keepPreviousData,
})
const prevPage = () => {
page.value = Math.max(page.value - 1, 1)
}
const nextPage = () => {
if (!isPlaceholderData.value) {
page.value = page.value + 1
}
}
</script>
<template>
<h1>Posts</h1>
<p>Current Page: {{ page }} | Previous data: {{ isPlaceholderData }}</p>
<button @click="prevPage">Prev Page</button>
<button @click="nextPage">Next Page</button>
<div v-if="isPending">Loading...</div>
<div v-else-if="isError">An error has occurred: {{ error }}</div>
<div v-else-if="data">
<ul>
<li v-for="item in data" :key="item.id">
{{ item.title }}
</li>
</ul>
</div>
</template>