From 42c4e387e0d23e2a3ad25627f479b733a1f97adf Mon Sep 17 00:00:00 2001
From: dp~ <457509824@qq.com>
Date: Sun, 22 Oct 2017 23:48:03 +0800
Subject: [PATCH] =?UTF-8?q?=E5=8A=A0=E4=B8=AA=E4=BE=8B=E5=AD=90?=
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---
 var-let-const.md | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/var-let-const.md b/var-let-const.md
index 00291d3..cb1a630 100644
--- a/var-let-const.md
+++ b/var-let-const.md
@@ -38,3 +38,14 @@ person = {name:'tms'}; // 报错
 person.age = 40; // ok
 ```
 ps : 以上的例子一个是改变了对象，一个是改变了对象的属性，如果完全不想更改一个对象，可以使用`Object.freeze(obj)`
+
+# 再来个例子
+```
+for (var i = 1; i < 10; i++) {
+    console.log(i);
+    setTimeout(function () {
+        console.log(`i:${i}`);
+    }, 1000);
+}
+```
+这里把 `var` 可以换成 `let`,`const`试试。
\ No newline at end of file