diff --git a/chapter-2/item13/demo.js b/chapter-2/item13/demo.js
index 1564566..d80113f 100644
--- a/chapter-2/item13/demo.js
+++ b/chapter-2/item13/demo.js
@@ -46,15 +46,16 @@ function generateFunc2(arr) {
 var n = arr.length;
 for(var i = 0; i < n; i++) {
 (function() {
- result[i] = function() {
- return arr[i];
+ var j = i;
+ result[j] = function() {
+ return arr[j];
 }
 })()
 }
 return result;
 }
 // @3 产生新的函数
-var g3 = generateFunc1(testArr);
+var g3 = generateFunc2(testArr);
 console.log(g3[0]()); // 1
 console.log(g3[1]()); // 2
-console.log(g3[2]()); // 3
\ No newline at end of file
+console.log(g3[2]()); // 3
</div><div class="naked_ctrl">
<form action="/index.cgi/contrast" method="get" name="gate">
<p><a href="http://altstyle.alfasado.net">AltStyle</a> によって変換されたページ <a href="https://github.com/lfthwjx/effective-javascript/compare/master...ChaoCSSun:effective-javascript:master.diff">(-&gt;オリジナル)</a>
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<option value="default">デフォルト</option>
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<option value="larger-text">文字拡大</option>
<option value="mobile">モバイル</option>
</select>
<input type="submit" value="表示" />
</p>
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</div>