CODEWITHSUNDEEP
htmlcssgo
irom
irom

Reputation: 3596

How to print text between css selectors in golang using html package?

I have html document 

<value>1,2,3</value>
 <value>,1,3,5</value>

and what to extract text with code below but it only prints 'value' tags (css selectors). How to print the text from between tags instead using golang html package ?

z := html.NewTokenizer(b)
    for {
        tt := z.Next()
        switch {
        case tt == html.ErrorToken:
            return
        case tt == html.StartTagToken:
            t := z.Token()
            isAnchor := t.Data == "value"
            if isAnchor {
                fmt.Println(t.Data)
            }
        }
    }

Upvotes: 0

Views: 803

Answers (2)

whytheplatypus
whytheplatypus

Reputation: 189

This seems to work for me:

r := strings.NewReader("<value>1,2,3</value><value>,1,3,5</value>")
doc, err := html.Parse(r)
if err != nil {
    log.Fatal(err)
}
var f func(*html.Node)
f = func(n *html.Node) {
    if n.Type == html.ElementNode && n.Data == "value" {
        fmt.Println(n.FirstChild.Data)
    }
    for c := n.FirstChild; c != nil; c = c.NextSibling {
        f(c)
    }
}
f(doc)

I think the key is grabbing the FirstChild after finding the "value" node.

Upvotes: 4

Boris Le M&#233;ec
Boris Le M&#233;ec

Reputation: 2671

You have to use Text() method on the next Token.

if isAnchor := t.Data == "value"; isAnchor {
    z.Next()
    fmt.Println(z.Text())
}

Upvotes: 1

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