From 5f34544d858542c28320b2c64cb72c237355ae39 Mon Sep 17 00:00:00 2001
From: Shun Bai <baishunde@gmail.com>
Date: Mon, 21 Apr 2014 11:54:55 +0800
Subject: [PATCH] =?UTF-8?q?typeof=20=E7=A4=BA=E4=BE=8B=E4=BB=A3=E7=A0=81?=
 =?UTF-8?q?=E7=9A=84=E4=B8=AD=E6=AD=A3=E8=AF=AF=E5=AF=B9=E6=AF=94?=
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虽然为了演示 typeof 的作用而省略了 if 块内的语句，但此处的正、误两个示例，其意图正好相反，不知会否给某些读者造成误会。此处修改假设代码的意图为“如果v已定义”。
---
 grammar/basic.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/grammar/basic.md b/grammar/basic.md
index 22f4b611..d0d9aa63 100644
--- a/grammar/basic.md
+++ b/grammar/basic.md
@@ -710,7 +710,7 @@ if (v){
 // ReferenceError: v is not defined
 
 // 正确的写法
-if (typeof v === "undefined"){
+if (typeof v !== "undefined"){
 	// ...
 }