fixed #553

examples/routers/cascader.vue

@@ -79,8 +79,17 @@
     export default {
         data () {
             return {
-                value2: [],
-                data: [{
+                value2: ['beijing', 'gugong'],
+                data: []
+            }
+        },
+        methods: {
+            c () {
+                this.value2 = []
+            }
+        },
+        mounted () {
+            this.data = [{
                 value: 'beijing',
                 label: '北京',
                 children: [
@@ -128,11 +137,5 @@
                 ],
             }]
         }
-        },
-        methods: {
-            c () {
-                this.value2 = []
-            }
-        }
     }
 </script>

src/components/cascader/cascader.vue

@@ -219,6 +219,9 @@
                     return;
                 }
                 this.updateSelected(true);
+            },
+            data () {
+                this.$nextTick(() => this.updateSelected());
             }
         }
     };