Fixed typeError prompt

chvin · web-flow · commit cb58df14fc72 · 2017-07-19T15:27:35.000+08:00
es6[Symbol.iterator] will be called, not es6.
diff --git a/docs/iterator.md b/docs/iterator.md
@@ -716,7 +716,7 @@ for (let e in es6) {
 for (let e of es6) {
   console.log(e);
 }
-// TypeError: es6 is not iterable
+// TypeError: es6[Symbol.iterator] is not a function
 ```
 
 上面代码表示，对于普通的对象，`for...in`循环可以遍历键名，`for...of`循环会报错。

Original file line number	Diff line number	Diff line change
`@@ -716,7 +716,7 @@ for (let e in es6) {`
`716`	`716`	`for (let e of es6) {`
`717`	`717`	`console.log(e);`
`718`	`718`	`}`
`719`		`-// TypeError: es6 is not iterable`
	`719`	`+// TypeError: es6[Symbol.iterator] is not a function`
`720`	`720`	```
`721`	`721`
`722`	`722`	上面代码表示，对于普通的对象，`for...in`循环可以遍历键名，`for...of`循环会报错。