update

2019/12/vue-router.md

@@ -112,5 +112,29 @@ new Vue({
 
 
 ```
+a.vue
+```
+```
+a.vue
 
-a.
+
+b.vue (组件b)
+
+```
+<template>
+  <div>
+      <div>这是bbb</div>
+  </div>
+</template>
+
+<script>
+export default {
+    name:"b"
+}
+</script>
+
+<style>
+
+</style>
+
+```