uni请求中showloading显示

在写代码时，看到前辈在发送网络请求时的一个很好的习惯，在请求，数据处理中会进行showloading，大大增大了加载过程中的交互，代码如下：

JAVASCRIPT
requestAssessmentList() {
        uni.showLoading({
            title: this.lang['global']['loading-text']
        });
        getAssessmentList()
            .then((res) => {
                if (res.errorMsg == 'Success') {
                    // 过滤掉剩余次数为0的卷子
                    this.paperList = res.assessment.filter((i) => {
                        const num = i.numberOfRetakesPossible;
                        return num || num != 0;
                    });
                    // this.paperList = res.assessment
                    /* this.paperList.push({
                        kindName:"化妆品",
                        brandNames:["a","b","c"],
                        seriesName:["32342","23543","5436"]
                    }) */
                } else {
                    uni.showToast({
                        title: res.errorMsg,
                        duration: 2000
                    });
                }
            })
            .finally(() => {
                uni.hideLoading();
                uni.stopPullDownRefresh();
            });
		},