114 lines
3.9 KiB
Vue
114 lines
3.9 KiB
Vue
<template>
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<DocSectionText v-bind="$attrs">
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<p>
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Virtual Scrolling is a performant way to render large lists. Configuration of the scroll behavior is defined with <i>virtualScrollerOptions</i> that requires <i>itemSize</i> as the mandatory value to set the height of an item. Visit
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<PrimeVueNuxtLink to="/virtualscroller">VirtualScroller</PrimeVueNuxtLink> documentation for more information about the configuration API.
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</p>
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</DocSectionText>
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<div class="card flex justify-center">
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<AutoComplete v-model="selectedItem" :suggestions="filteredItems" @complete="searchItems" :virtualScrollerOptions="{ itemSize: 38 }" optionLabel="label" dropdown />
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</div>
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<DocSectionCode :code="code" />
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</template>
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<script>
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export default {
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data() {
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return {
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items: Array.from({ length: 1000 }, (_, i) => ({ label: `Item #${i}`, value: i })),
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selectedItem: null,
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filteredItems: null,
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code: {
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basic: `
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<AutoComplete v-model="selectedItem" :suggestions="filteredItems" @complete="searchItems"
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:virtualScrollerOptions="{ itemSize: 38 }" optionLabel="label" dropdown />
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`,
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options: `
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<template>
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<div class="card flex justify-center">
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<AutoComplete v-model="selectedItem" :suggestions="filteredItems" @complete="searchItems" :virtualScrollerOptions="{ itemSize: 38 }" optionLabel="label" dropdown />
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</div>
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</template>
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<script>
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export default {
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data() {
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return {
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items: Array.from({ length: 1000 }, (_, i) => ({ label: \`Item #\${i}\`, value: i })),
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selectedItem: null,
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filteredItems: null,
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};
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},
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methods: {
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searchItems(event) {
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//in a real application, make a request to a remote url with the query and return filtered results, for demo we filter at client side
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let query = event.query;
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let _filteredItems = [];
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for (let i = 0; i < this.items.length; i++) {
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let item = this.items[i];
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if (item.label.toLowerCase().indexOf(query.toLowerCase()) === 0) {
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_filteredItems.push(item);
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}
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}
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this.filteredItems = _filteredItems;
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}
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}
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};
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<\/script>
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`,
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composition: `
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<template>
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<div class="card flex justify-center">
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<AutoComplete v-model="selectedItem" :suggestions="filteredItems" @complete="searchItems" :virtualScrollerOptions="{ itemSize: 38 }" optionLabel="label" dropdown />
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</div>
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</template>
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<script setup>
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import { ref } from "vue";
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const items = ref(Array.from({ length: 1000 }, (_, i) => ({ label: \`Item #\${i}\`, value: i })));
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const selectedItem = ref();
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const filteredItems = ref();
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const searchItems = (event) => {
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//in a real application, make a request to a remote url with the query and return filtered results, for demo we filter at client side
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let query = event.query;
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let _filteredItems = [];
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for (let i = 0; i < items.value.length; i++) {
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let item = items.value[i];
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if (item.label.toLowerCase().indexOf(query.toLowerCase()) === 0) {
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_filteredItems.push(item);
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}
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}
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filteredItems.value = _filteredItems;
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};
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<\/script>
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`
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}
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};
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},
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methods: {
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searchItems(event) {
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//in a real application, make a request to a remote url with the query and return filtered results, for demo we filter at client side
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let query = event.query;
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let _filteredItems = [];
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for (let i = 0; i < this.items.length; i++) {
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let item = this.items[i];
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if (item.label.toLowerCase().indexOf(query.toLowerCase()) === 0) {
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_filteredItems.push(item);
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}
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}
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this.filteredItems = _filteredItems;
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}
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}
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};
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</script>
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