require phone length

pages/login/index.vue

@@ -165,7 +165,11 @@ export default {
   },
   computed: {
     disabled() {
-      return this.phoneNumber.trim() === '' || this.captcha.trim() === ''
+      return (
+        this.phoneNumber.trim() === '' ||
+        this.phoneNumber.trim().length != 11 ||
+        this.captcha.trim() === ''
+      )
     }
   }
 }