uniapp开发时，常常需要进行底部监听，用来加载分页数据 使用onReachBottom判断页面是否触底，用来进行新数据加载

        onReachBottom() {
            this.getmore();
        },

getmore() {
                var that = this;
                that.page = that.page + 1;
                uni.showNavigationBarLoading();
                that.more = 'loading';
                let data = {
                    page: this.page,
                    catId: this.catId,
                    keyword: this.keyword,
                };
                this.$minApi
                    .infolists(data)
                    .then(res => {
                        uni.hideNavigationBarLoading();
                        console.log(res);
                        that.more = 'more';
                        if (res.code == 1) {
                            var data = res.data.rows;
                            if (!data || data.length == 0) {
                                that.more = 'noMore';
                            }
                            for (var i = 0; i < data.length; i++) {
                                that.list.push(data[i]);
                            }
                        } else {
                            uni.showToast({
                                title: res.msg,
                                duration: 2000,
                                icon: 'none'
                            });
                        }
                    })
                    .catch(err => {
                        console.log(err);
                    });
            },
            getlist() {
                var that = this;
                this.page = 1;
                let data = {
                    page: this.page,
                    catId: this.catId,
                    keyword: this.keyword,
                };
                uni.showNavigationBarLoading();
                this.$minApi.infolists(data).then(res => {
                    uni.hideNavigationBarLoading();
                    console.log(res);
                    if (res.code == 1) {
                        this.list = res.data
                    } else {
                        uni.showToast({
                            title: res.msg,
                            icon: 'none',
                            duration: 2000
                        });
                    }
                });
            },