From 0fd9ec385a20dd57bc65c0984d19d058dce6da99 Mon Sep 17 00:00:00 2001
From: HeGang <493910728@qq.com>
Date: Sun, 8 Oct 2017 09:44:13 -0500
Subject: [PATCH] Update custom-directive.md (#1198)

I suggest add this params demo because i can not understand when i saw this part,i think other people will have the same confusion
---
 src/v2/guide/custom-directive.md | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/v2/guide/custom-directive.md b/src/v2/guide/custom-directive.md
index 28fb161ef..cf730df64 100644
--- a/src/v2/guide/custom-directive.md
+++ b/src/v2/guide/custom-directive.md
@@ -44,6 +44,9 @@ Vue.directive('focus', {
 directives: {
   focus: {
     // ディレクティブ定義
+    inserted: function (el) {
+      el.focus()
+    }
   }
 }
 ```