一个简单的适用于Vue的下拉刷新，触底加载组件

话不多说，直接上代码，原文地址 博客地址

<template>
    <div class="list-warp-template"
         @touchstart="handlerStart"
         @touchend="handlerEnd"
         @touchmove="handlerMove"
         @scroll="handlerScroll"
         ref="listWrapRef">
        <div class="top-refresh" :style="{height: refresh.height + 'px'}">
            <div v-show="refresh.height > 30">
                {{refreshLoading ? '刷新中' : '松开刷新'}}
            </div>
        </div>
        <div class="main-list">
            <slot></slot>
        </div>
        <div class="bottom-loading" v-show="bottomLoading">加载中</div>
    </div>
</template>
<script>
    let timer = null
    export default {
        name: "ListWrap",
        props: {
            refreshLoading: {
                type: Boolean,
                default: false
            }
        },
        data() {
            return {
                position: 0,
                startInit: 0,
                bottomLoading: false,
                refresh: {
                    height: 0
                }
            }
        },
        created() {
        },
        watch: {
            refreshLoading(val) {
                if (!val) {
                    this.refresh.height = 0
                }
            }
        },
        computed: {},
        mounted() {
        },
        methods: {
            handlerScroll(e) {
                const eDom = e.target
                const scrollTop = e.target.scrollTop
                // 判断是否到底了
                let scrollPosition = eDom.scrollHeight - e.target.offsetHeight
                if (timer) {
                    clearTimeout(timer)
                }
                // console.log(scrollPosition)
                // console.log(scrollTop)
                timer = setTimeout(() => {
                    this.bottomLoading = true
                    if (scrollPosition <= scrollTop) {
                        this.$emit('on-bottom')
                    }
                }, 200)
                this.position = scrollTop
                // 滚动事件，返回当前滚动位置
                this.$emit('on-scroll', scrollPosition)
            },
            // 返回顶部
            handlerBackTop() {
                const dom = this.$refs.listWrapRef
                dom.scrollTop = 0
            },
            // 触摸开始
            handlerStart(e) {
                this.startInit = parseInt(e.touches[0].clientY)
            },
            // 滑动中,下拉
            handlerMove(e) {
                if (this.position === 0 && !this.refreshLoading) {
                    const Y = parseInt(e.touches[0].clientY)
                    const range = Y - this.startInit
                    this.refresh.height = range
                }
            },
            // 滑动结束
            handlerEnd() {
                if (this.refresh.height >= 30) {
                    this.refresh.height = 40
                    this.$emit('on-refresh')
                    this.$emit('update:refreshLoading', true)
                } else {
                    this.refresh.height = 0
                }
                this.startInit = 0
            }
        }
    }
</script>
<style lang="scss">
    .list-warp-template {
        display: block;
        height: 100vh;
        overflow-y: auto;

        .top-refresh {
            background-color: #ccc;
            height: 0;
            width: 100%;
            transition: height 0.1s linear;
            overflow: hidden;
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .main-list {
            width: 100%;
        }

        .bottom-loading {
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #999;
            width: 100%;
            background-color: #f0f0f0;
        }
    }
</style>
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