fix: 学练记录页面时间段选择计算错误

src/pages/learn/record.vue

@@ -380,14 +380,15 @@ export default {
       this.queryExamRecord()
     },
     nearlySevenDays() {
-      return this.nearlyDays(5)
+      return this.nearlyDays(6)
     },
     nearlyThirtyDays() {
-      return this.nearlyDays(28)
+      return this.nearlyDays(29)
     },
     nearlyDays(day) {
-      var end = new Date().getTime()
-      var start = new Date().setDate(new Date().getDay() - day)
+	  let date = new Date()
+      var end = date.getTime()
+      var start = date.setDate(date.getDate() - day)
       var params = {
         startDate: this.$u.timeFormat(start, 'yyyy-mm-dd'),
         endDate: this.$u.timeFormat(end, 'yyyy-mm-dd'),