如何在Golang请求中执行JavaScript异步代码

I need to read the content of a dynamically generated page with from a website with this code in , it works fine for non ajax pages but i can't find a package or example to do this. Thanks.

package main

import(

    "fmt"
    "time"
    "net/http"
    "github.com/PuerkitoBio/goquery"
    "strings"
    "strconv"

)

func main() {

    var masterURI [1]string
    masterURI[0] = "http://uri1"
    /*masterURI[1] = "http://uri2"
    masterURI[2] = "http://uri3"*/

    for _, uri := range masterURI {

        doc, err := extractHTML(uri)

        check(err)

        search := doc.Find(".pagination li a span").Eq(-1)

        numPages, err := strconv.Atoi(search.Text())

        check(err)

        var i int

        for i = 1; i <= numPages; i++ {

            page := uri + "#/page-" + strconv.Itoa(i)

            fmt.Println("
========> " + page)

            doc, err := extractHTML(page)

            check(err)

            search := doc.Find(".product-name")

            for i := range search.Nodes {
                product := strings.TrimSpace(search.Eq(i).Text())
                fmt.Println(product)
                // use `single` as a selection of 1 node
            }

        }

        fmt.Println(" --- ")

    }

}

func extractHTML(url string) (doc *goquery.Document, err error) {

    userAgent := "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/45.0.2454.93 Safari/537.36 OPR/32.0.1948.69";

    trans := &http.Transport{
       DisableKeepAlives: true,
    }

    timeout := time.Duration(600 * time.Second)

    myClient := &http.Client{Transport: trans, Timeout: timeout}

    req, err := http.NewRequest("GET", url, nil)

    check(err)

    req.Header.Add("User-Agent", userAgent)

    resp, err := myClient.Do(req)

    req.Close = true

    check(err)

    if resp.StatusCode == 200 {

        doc, err = goquery.NewDocumentFromResponse(resp) 

    }

    check(err)

    resp.Body.Close()

    return doc, err

}

func check(err error) {

    if err != nil {

        panic(err)

    }

}

As some have downvoted your answer, I'll just try to point you in the right direction.

You don't execute javascript in Go. You usually do so in your browser, using Development Tools (F12 or something), view the Network tab to see which URL is being called, and then call that URL in your code.