go - 如何使用 goquery 检索子元素的完整 HTML？

Question

为什么下面的测试会失败？

func TestGetFirstElementHtml(t *testing.T) {
    test := `<speak><p>My paragraph</p></speak>`
    doc, _ := goquery.NewDocumentFromReader(strings.NewReader(test))
    var childrenHtml []string
    doc.Find("speak").Children().Each(func(i int, s *goquery.Selection) {
        html, _ := s.Html()
        childrenHtml = append(childrenHtml, html)
    })
    if childrenHtml[0] != "<p>My paragraph</p>" {
        t.Fatalf("First element html is not valid: '%s'", childrenHtml[0])
    }
}

这是测试结果:

=== FAIL: . TestGetFirstElementHtml (0.00s)
    main_test.go:45: First element html is not valid: 'My paragraph'

换句话说，如果我无法预测第一个子元素是什么类型的 html 元素，我如何才能检索到第一个子元素的完整 HTML？

Answer 1

你要的其实是外层HTML，调用goquery.OuterHTML就可以得到功能。根据文档:

func OuterHtml(s *Selection) (string, error)

OuterHtml returns the outer HTML rendering of the first item in the selection - that is, the HTML including the first element's tag and attributes.

Unlike InnerHtml, this is a function and not a method on the Selection, because this is not a jQuery method (in javascript-land, this is a property provided by the DOM).

所以只需将行更改为:

html, _ := goquery.OuterHTML(s)