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Revise chapter 5.5 on function values in Go #247

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chai2010 merged 1 commit into from
Nov 16, 2025
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Revise chapter 5.5 on function values in Go #247

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3 changes: 2 additions & 1 deletion ch5/ch5-05.md
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Expand Up @@ -119,7 +119,7 @@ $ ./outline2 http://gopl.io

**练习 5.7：** 完善startElement和endElement函数，使其成为通用的HTML输出器。要求：输出注释结点，文本结点以及每个元素的属性（< a href='...'>）。使用简略格式输出没有孩子结点的元素（即用`<img/>`代替`<img></img>`）。编写测试，验证程序输出的格式正确。（详见11章）

**练习 5.8：** 修改pre和post函数，使其返回布尔类型的返回值。返回false时，中止forEachNoded的遍历。使用修改后的代码编写ElementByID函数，根据用户输入的id查找第一个拥有该id元素的HTML元素，查找成功后，停止遍历。
**练习 5.8：** 修改pre和post函数，使其返回布尔类型的返回值。返回false时，中止forEachNode的遍历。使用修改后的代码编写ElementByID函数，根据用户输入的id查找第一个拥有该id元素的HTML元素，查找成功后，停止遍历。

```Go
func ElementByID(doc *html.Node, id string) *html.Node
Expand All @@ -130,3 +130,4 @@ func ElementByID(doc *html.Node, id string) *html.Node
```Go
func expand(s string, f func(string) string) string
```

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