智能选课

src/App.js

@@ -69,8 +69,7 @@ class App extends Component {
     this.getUser()
     this.utm()
 
-    const {history, location} = this.props
-    this.records.push(location)
+    const {history} = this.props
 
     this.setNavigationRecord(this.props.location, this.props.history.action)
     this.setPreviousLocation()
@@ -142,13 +141,12 @@ class App extends Component {
     const {pathname, search, hash} = location
     let isLastRecord = location.pathname === (this.records.length && this.records[this.records.length - 1].pathname)
     let needHistoryMutation = location.pathname !== this.previousLocation.pathname
-
     switch (action) {
       case 'POP':
         if (needHistoryMutation) {
           this.firstLoad ? this.records.push({pathname, search, hash}) : this.records.pop()
         } else {
-          this.records[this.records.length - 1] = location
+          this.records.length ? (this.records[this.records.length - 1] = location) : this.records = [location]
         }
         break
       case 'REPLACE':
@@ -160,8 +158,10 @@ class App extends Component {
 
     location.state && location.state.records
       ? (location.state.records = this.records)
-      : location.state ? location.state = {...location.state, records: this.records}
-      : (location.state = {records: this.records})
+      : location.state ? location.state = {
+        ...location.state,
+        records: this.records,
+      } : (location.state = {records: this.records})
   }