如何使用colly在属性中抓取属性

import (
    "github.com/gocolly/colly"
)

c := colly.NewCollector()

c.OnHTML("tag[attr]", func(e *colly.HTMLElement) {
    attrValue := e.Attr("attr")
    // 处理属性值
})

c.Visit("http://example.com")

package main

import (
    "fmt"
    "github.com/gocolly/colly"
)

func main() {
    c := colly.NewCollector()

    c.OnHTML("tag[attr]", func(e *colly.HTMLElement) {
        attrValue := e.Attr("attr")
        fmt.Println(attrValue)
    })

    c.Visit("http://example.com")
}