loading.js

var reqNum = 0;
export default {
    methods: {
        startLoading() {
            if (reqNum === 0) {
                uni.showLoading({
                    title: '正在加载,请稍候',
                    mask: false,
                })
            }
            reqNum++
        },
        endLoading() {
            if (reqNum <= 0) return
            reqNum--
            if (reqNum === 0) {
                uni.hideLoading();
            }
        },
    }
}

使用页面

import mixinLoading from '../components/loading.js';
export default {
        name: "userAlarm",
        mixins: [mixinLoading],
                methods:{
                  //示例请求
                      getEventNumByHour() {
                this.startLoading();
                this.post({
                    showLoading:false,
                    url: Api.URL.URL_EventNumByHourApp(),
                    data: {
                        queryStartTime: this.currentParam.alarmTimeStart,
                        queryEndTime: this.currentParam.alarmTimeEnd,
                    },
                    success: (res) => {
                        this.endLoading();
                        this.getEventNumByInterceptHour(res.data);
                    },
                    fail: (err) => {
                        this.endLoading();
                        console.error(err);
                    },
                });
            },
            getEventNumByInterceptHour(array) {
                    this.startLoading();
                this.post({
                    showLoading:false,
                    url: Api.URL.URL_GetEventNumByInterceptHour(),
                    data: {
                        queryStartTime: this.currentParam.alarmTimeStart,
                        queryEndTime: this.currentParam.alarmTimeEnd,
                    },
                    success: (res) => {
                        this.endLoading();
                        let lineDataList = [];
                        
                    },
                    fail: (err) => {
                        this.endLoading();
                        console.error(err);
                    },
                });
            },

                      .....
  }
}