A high-performance Vue.js plugin with virtual DOM list to support fast, smooth infinite scroll | 一款基于虚拟列表的高性能Vue.js无限加载组件

Demo

Install

npm install --save vue-smooth-infinite-scroll

OR 

yearn add vue-smooth-infinite-scroll

Import into your project

// in a vue2 project
import SmoothInfiniteScroll from "vue-smooth-infinite-scroll";

// common JS
var SmoothInfiniteScroll = require("vue-smooth-infinite-scroll");

Usage

<template>
    <smooth-infinite-scroll
        :itemHeight="220"
        :items="items"
        @next="onNext"
        :hasMore="hasMore"
        :preRenderCount="3"
    >
        <template v-slot="{ item }">
            <div>
                {{ item }}
            </div>
        </template>

        <template #loader>
            <span>Your custom loader component</span>
        </template>

        <template #noMoreData>
            <span>Your custom "no more data" component</span>
        </template>
    </smooth-infinite-scroll>
</template>

<script>
import SmoothInfiniteScroll from "vue-smooth-infinite-scroll";

export default {
    components: {
        SmoothInfiniteScroll
    },

    data() {
        return {
            items: [],
            currPage: 1,
            hasMore: true
        }
    },

    methods: {
        async fetchNewData(page) {
            /* your code to fetch new data by page number */
            const newData = await this.$http.get("SOME_URL");
            if (!newData.length) {
                // set hasMore to false for "noMoreData" slot to render
                this.hasMore = false;
            } else {
                // pass new data into the infinite scroll component
                this.items = this.items.concat(newData);
            }
        },

        onNext() {
            // fetch the next page of data upon hitting the bottom
            this.currPage = this.currPage + 1;
            this.fetchNewData(this.currPage);
        }
    }
}
</script>

Props, Slots and Events

Props

| name | type | description | | ------------------------------ | -------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | itemHeight | Number Required | Height for each item in the infinite scroll in pixels | | hasMore | Boolean Required | If true, the infinite scroll will emit next event when hitting the bottom of the scroll. Otherwise, it will display the custom or default "no more data" component at the bottom of the scroll | | items | Array Required | The list data items which you need to scroll | | preRenderCount | Number Optional | Number of items to be preemptively rendered before they enter the viewport. A higher number will give a smoother scroll but renders more DOM elements. Default is 5| | scrollableTargetId | String Optional | ID of the parent element to which the scrolling action is relative. Only required when scrolling inside of a element with a fixed height |

Slots

| name | description | default | | ------------------------------ | -------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | loader | Shown when new data is being fetched | <span>Loading...</span> | | noMoreData | Shown where user has reached the bottom of the scroll (i.e. when no new data is available) | <span>No more data</span> |

Events

| name | description | handling | | ------------------------------ | -------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | next | Emitted from the SmoothInfiniteScroll component whenever user has reached the bottom of the scroll | Your own onNext function which will request new data, concatenate it with this.items and set hasMore accordingly as in the above example |

Contributing

Contributions, issues and feature requests are welcome!Feel free to check issues page.

Show your support

Give a ⭐️ if this project helped you!

License

Copyright © 2022 hao. This project is MIT licensed.

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