there is no problem when id, is opened for the first time (switching to another page and coming back is useless);
has been tried in the lifecycle method created,updated mounted, but it still doesn"t work. Ah, I"m mad! Ask for help to solve it!

<template>
    <div>
        <div class="mui-content">
            <!---->
            <div id="lists" class="mui-content mui-scroll-wrapper" style="margin-bottom: 4rem;">
                <div class="mui-scroll">
                    <!---->
                    <ul class="mui-table-view mui-table-view-chevron">
                        <li class="mui-table-view-cell" v-for="(topic,index) of topics"><a class="mui-navigate-right">Item {{index}}</a></li>
                    </ul>
                </div>
            </div>
        <nav-components></nav-components>
        </div>
    </div>
</template>

<script scoped>

    import navComponents from "./nav.vue"

    export default {
        components: {navComponents},
        name: "index",
        data() {
            return {
                topics: [],
            }
        },
        methods: {
            pulldownRefresh: function () {
                alert();
            },
            pullupRefresh: function () {
                var count = 0;
                var that = this;
                setTimeout(function() {
                    that.topics.push({
                        "id": 14,
                        "content": "xxxxx",
                        "clicl_number": 0,
                        "support_number": 0,
                        "create_time": "20180723 17:02:04",
                        "user": {
                            "nickname": "002",
                            "face_url": "https://img.codeshelper.com/upload/img/2021/06/30/0sfxyjxuepq18499.jpeg"
                        }
                    });
                }, 1500);
            }
        },
        mounted: function () {
            var that = this;
            mui("-sharplists").scroll({
                deceleration: 0.0006,
                scrollY: true, //
                bounce: true,    ///
            });
            
        },
        created(){
            mui.init({
                pullRefresh: {
                    container: "-sharplists",
                    up: {//
                        auto:true,//,false.
                        contentrefresh: "...",
                        contentnomore:"",//;
                        callback: this.pullupRefresh
                    }
                }
            });
        },
    }
</script>