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K6
html
QuerySelector

How to use QuerySelector method of html Package

Best K6 code snippet using html.QuerySelector

main.go

Source:main.go

...28	examplesFS embed.FS29)30func main() {31	exampleNames := playground.ListFileNames(examplesFS, "examples")32	selectExample := window.Document.QuerySelector("select#select-example").(browser.Element)33	for _, name := range exampleNames {34		option := window.Document.CreateElement("option")35		option.SetAttribute("value", name)36		option.AppendChild(window.Document.CreateTextNode(name))37		selectExample.Append(option)38	}39	updateExampleCode(exampleNames[0])40	exampleChangeHandler := browser.NewEventListenerFunc(updateExampleCodeHandler)41	defer exampleChangeHandler.Release()42	selectExample.AddEventListener("change", exampleChangeHandler)43	runButton := window.Document.QuerySelector("button#run").(browser.Element)44	var runCount int6445	runBtnClickHandler := browser.NewEventListenerFunc(func(event browser.Event) {46		atomic.AddInt64(&runCount, 1)47		go handleRun(int(runCount))48	})49	defer runBtnClickHandler.Release()50	runButton.AddEventListener("click", runBtnClickHandler)51	editorEl := window.Document.QuerySelector("#editor")52	editorEl.RemoveAttribute("hidden")53	defer editorEl.SetAttribute("hidden", "")54	messageHandler := browser.NewEventListenerFunc(func(event browser.Event) {55		d := js.Value(event).Get("data")56		messageName := d.Get("name").String()57		runNode := window.Document.QuerySelector(fmt.Sprintf(`[data-run-id="%d"]`, d.Get("runID").Int()))58		if runNode == nil {59			return60		}61		runBox, ok := runNode.(browser.Element)62		if !ok || runBox.Attribute("data-run-id") != strconv.Itoa(d.Get("runID").Int()) {63			return64		}65		switch messageName {66		case "exit":67			exitStatusTemplate := /* language=gohtml */ ` <div class="exit-status"><pre>exit code {{.ExitCode}} after {{.Duration.String}}</pre></div>`68			exitCode := d.Get("exitCode").Int()69			duration := time.Duration(d.Get("duration").Int()) * time.Millisecond70			exitStatusTemplate = strings.Replace(exitStatusTemplate, `{{.ExitCode}}`, strconv.Itoa(exitCode), 1)71			exitStatusTemplate = strings.Replace(exitStatusTemplate, `{{.Duration.String}}`, duration.String(), 1)72			runBox.InsertAdjacentHTML(dom.PositionBeforeEnd, exitStatusTemplate)73		case "writeSync":74			writeSyncBuf := make([]byte, d.Get("buf").Length())75			js.CopyBytesToGo(writeSyncBuf, d.Get("buf"))76			writeSyncMessage := struct {77				Buf string78				FD  int79			}{80				Buf: string(writeSyncBuf),81				FD:  d.Get("fd").Int(),82			}83			stdout := runBox.QuerySelector(".stdout")84			stdout.Append(window.Document.CreateTextNode(writeSyncMessage.Buf))85		}86	})87	defer messageHandler.Release()88	window.AddEventListener("message", messageHandler)89	select {}90}91func handleRun(runID int) {92	codeTextareaEl := window.Document.QuerySelector("textarea#code").(browser.Element)93	codeTextarea := browser.Input(codeTextareaEl).Value()94	req, err := http.NewRequest(http.MethodPost, "/go/run", strings.NewReader(codeTextarea))95	if err != nil {96		fmt.Println("failed to create request", err)97		return98	}99	res, err := http.DefaultClient.Do(req)100	if err != nil {101		fmt.Println("failed to do request", err)102		return103	}104	defer func() {105		_ = res.Body.Close()106	}()107	if res.StatusCode != http.StatusOK {108		buf, err := io.ReadAll(res.Body)109		if err != nil {110			fmt.Println("failed to read response", err)111			return112		}113		window.Document.QuerySelector("pre#stderr").ReplaceChildren(window.Document.CreateTextNode(string(buf)))114		return115	}116	window.Document.QuerySelector("pre#stderr").ReplaceChildren()117	_, params, err := mime.ParseMediaType(res.Header.Get("Content-Type"))118	if err != nil {119		fmt.Println("failed to parse response mimetype", err)120		return121	}122	r := multipart.NewReader(res.Body, params["boundary"])123	for {124		part, err := r.NextRawPart()125		if err != nil {126			if err != io.EOF {127				fmt.Println("failed to read response part", err)128				return129			}130			break131		}132		switch part.FormName() {133		case "stdout":134			buf, err := io.ReadAll(part)135			if err != nil {136				fmt.Println("failed to read response stdout", err)137				return138			}139			window.Document.QuerySelector("pre#stdout").ReplaceChildren(window.Document.CreateTextNode(string(buf)))140		case "stderr":141			buf, err := io.ReadAll(part)142			if err != nil {143				fmt.Println("failed to read response stdout", err)144				return145			}146			window.Document.QuerySelector("pre#stderr").ReplaceChildren(window.Document.CreateTextNode(string(buf)))147		case "output":148			buf, err := ioutil.ReadAll(part)149			if err != nil {150				fmt.Println("failed to read response output", err)151				return152			}153			runWASM(runID, buf)154		}155	}156}157func runWASM(runID int, buf []byte) {158	const runHTML = /* language=html */ `<div class="run" data-run-id="">159		<button class="close" style="font-weight: bolder; color: var(--fuchsia)">x</button>160		<input id="hide-window" type="checkbox" style="display: none;">161		<label for="hide-window" class="button" style="font-weight: bolder;"></label>162		<iframe163				class="run"164				srcdoc=""165				title="Run"166				sandbox="allow-scripts"167		></iframe>168		<pre class="stdout"></pre>169	</div>`170	origin := js.Global().Get("location").Get("origin").String()171	runIDString := strconv.Itoa(runID)172	htmlTemplate := window.Document.CreateElement("html").(browser.Element)173	htmlTemplate.InsertAdjacentHTML(dom.PositionAfterBegin, runHTMLHEAD)174	htmlTemplate.QuerySelector(`meta[name="go-playground-webapp-location"]`).SetAttribute("content", origin)175	htmlTemplate.QuerySelector(`meta[name="go-playground-run-id"]`).SetAttribute("content", runIDString)176	wasmExecScriptEl := window.Document.CreateElement("script")177	wasmExecScriptEl.ReplaceChildren(window.Document.CreateTextNode(wasmExec))178	htmlTemplate.InsertBefore(wasmExecScriptEl, htmlTemplate.QuerySelector("script"))179	htmlTemplate.InsertAdjacentHTML(dom.PositionBeforeEnd, "<body></body>")180	var sb strings.Builder181	sb.WriteString("<!doctype html>")182	sb.WriteString(htmlTemplate.OuterHTML())183	temporaryNode := window.Document.CreateElement("div").(browser.Element)184	temporaryNode.SetInnerHTML(runHTML)185	temporaryNode.QuerySelector("iframe.run").SetAttribute("srcdoc", sb.String())186	runBox := temporaryNode.FirstChild().(browser.Element)187	runBox.SetAttribute("data-run-id", runIDString)188	frame := runBox.QuerySelector("iframe.run").(browser.Element)189	var resources []interface {190		Release()191	}192	loadEventListener := browser.NewEventListenerFunc(func(event browser.Event) {193		message := window.NewObject()194		message.Set("name", "binary")195		array := window.NewUint8ClampedArray(len(buf))196		_ = js.CopyBytesToJS(array, buf)197		message.Set("binary", array)198		js.Value(frame).Get("contentWindow").Call("postMessage", message, "*")199	})200	resources = append(resources, loadEventListener)201	frame.AddEventListener("load", loadEventListener)202	closeBtn := runBox.QuerySelector("button.close").(browser.Element)203	closeEventListener := browser.NewEventListenerFunc(func(event browser.Event) {204		divRun := runBox.Closest("div.run")205		js.Value(frame).Get("contentWindow").Call("close")206		divRun.ParentElement().RemoveChild(divRun)207		for _, resource := range resources {208			resource.Release()209		}210	})211	resources = append(resources, closeEventListener)212	closeBtn.AddEventListener("click", closeEventListener)213	window.Document.QuerySelector("main").Append(runBox)214}215func updateExampleCodeHandler(event browser.Event) {216	updateExampleCode(event.Target().(dom.InputElement).Value())217}218func updateExampleCode(name string) {219	f, _ := examplesFS.Open(filepath.Join("examples", name, "main.go"))220	defer func() {221		_ = f.Close()222	}()223	buf, _ := io.ReadAll(f)224	browser.Input(window.Document.QuerySelector("textarea#code").(browser.Element)).SetValue(string(buf))225}...

scraper_chromedp.go

Source:scraper_chromedp.go

1package main2import (3	"context"4	"log"5	"time"6	"strings"7	cdp "github.com/knq/chromedp"8	// cdptypes "github.com/knq/chromedp/cdp"9)10func main() {11	var err error12	// create context13	ctxt, cancel := context.WithCancel(context.Background())14	defer cancel()15	// create chrome instance16	// c, err := cdp.New(ctxt, cdp.WithLog(log.Printf))17	c, err := cdp.New(ctxt)18	if err != nil {19		log.Fatal(err)20	}21	// Run task to get the RaceList22	var resRaceList [][]string23	err = c.Run(ctxt, getTodayResults(&resRaceList))24	if err != nil {25		log.Fatal(err)26	}27	log.Printf("====================RaceList=============================\n%#v", resRaceList)28	//Run task to get the result dogs29	for i := 0; i < len(resRaceList); i++ {30		for j := 0; j < (len(resRaceList[i]) - 1) / 2; j++ {31			indexDog := (j + 1) * 2;32			raceDetailLink := resRaceList[i][indexDog];33			var resResultDogs [][]string34			var resResultTitle string35			var resWatchURL string36			err = c.Run(ctxt, getResultsDogs(raceDetailLink, &resResultTitle, &resWatchURL, &resResultDogs))37			if err != nil {38				log.Fatal(err)39			}40			var eventNumber string = strings.Split(resResultTitle, " ")[1]41			var eventDistance string = strings.Split(resResultTitle, " ")[4]42			log.Printf("=================================================");43			log.Printf("raceDetailLink: %s", raceDetailLink)44			// log.Printf("Title: %s", resResultTitle)45			log.Printf("eventNumber: %s", eventNumber)46			log.Printf("eventDistance: %s", eventDistance)47			log.Printf("URL: %s", resWatchURL)48			log.Printf("Dogs: %s", resResultDogs)49			50			//Run task to get the runner info51			for k := 0; k < len(resResultDogs); k++ {52				runnerLink := resResultDogs[k][0];53				var resLifeTimeInfo [][]string54				var resName string55				var resSireName string56				var resDamName string57				err = c.Run(ctxt, getResultsRunner(runnerLink, &resName, &resSireName, &resDamName, &resLifeTimeInfo))58				if err != nil {59					log.Fatal(err)60				}61				log.Printf("=================================================");62				log.Printf("Name: %s", resName)63				log.Printf("resSireName: %s", resSireName)64				log.Printf("resDamName: %s", resDamName)65				log.Printf("resLifeTimeInfo: %v", resLifeTimeInfo)66			}67		}68	}69	// shutdown chrome70	err = c.Shutdown(ctxt)71	if err != nil {72		log.Fatal(err)73	}74	// wait for chrome to finish75	err = c.Wait()76	if err != nil {77		log.Fatal(err)78	}79	80	81}82func jsGetRaceList(sel string) (js string) {83	const funcJS = `function getText(sel) {84				var text = [];85				var elements = document.body.querySelectorAll(sel);86				for(var i = 0; i < elements.length; i++) {87					var raceInfo = [];88					var current = elements[i];89					var raceName = current.querySelector('.results-race-name h4').innerHTML;90					raceInfo.push(raceName);91					var raceList = [];92					timeElements = current.querySelectorAll('.results-race-list-wrapper .results-race-list-row a')93					for(var k = 0; k < timeElements.length; k++) {94						timeElement = timeElements[k];95						var timeStr = timeElement.innerHTML;96						var timeLink = timeElement.href;97						raceInfo.push(timeStr);98						raceInfo.push(timeLink);99					}100					text.push(raceInfo);101					// if(current.children.length === 0 && current.textContent.replace(/ |\n/g,'') !== '') {102					// Check the element has no children && that it is not empty103					// 	text.push(current.textContent + ',');104					// }105				}106				return text107			 };`108	invokeFuncJS := `var a = getText('` + sel + `'); a;`109	return strings.Join([]string{funcJS, invokeFuncJS}, " ")110}111func getTodayResults(res *[][]string) cdp.Tasks {112	today := time.Now()113	yesterday := today.AddDate(0, 0, -1)114	strYesterday := yesterday.Format("2006-01-02")115	textSel := ".raceList li"116	jsText := jsGetRaceList(textSel)117	// fmt.Println("jsText: " + jsText);118	return cdp.Tasks{119		cdp.Navigate("http://greyhoundbet.racingpost.com/#results-list/r_date=" + strYesterday),120		cdp.WaitVisible("latestResults", cdp.ByID),121		cdp.Evaluate(jsText, res),122	}123}124//------------------------------ Result dogs ------------------------------- //125func jsGetResultDogs(sel string) (js string) {126	const funcJS = `function getText(sel) {127				var text = [];128				var elements = document.body.querySelectorAll(sel);129				for(var i = 0; i < elements.length; i++) {130					var current = elements[i];131					var refLink = current.href;132					var result = current.querySelector('.result');133					var finishPosition = result.querySelector('.place').innerHTML.split('<')[0].trim();134					var competitorName = result.querySelector('.info .holder .result-dog-name-details .name').innerHTML.trim();135					var finishTime = result.querySelector('.info .holder .dog-cols .col1').innerHTML.replace(/\&nbsp;/g, '').trim();136					var dogInfo = [];137					dogInfo.push(refLink);138					dogInfo.push(finishPosition);139					dogInfo.push(competitorName);140					dogInfo.push(finishTime);141					text.push(dogInfo);142				}143				return text144			 };`145	invokeFuncJS := `var a = getText('` + sel + `'); a;`146	return strings.Join([]string{funcJS, invokeFuncJS}, " ")147}148func getResultsDogs(urlLink string, resTitle *string, resMediaURL *string, res *[][]string) cdp.Tasks {149	textSel := ".meetingResultsList .container .details"150	jsText := jsGetResultDogs(textSel)151	// fmt.Println("jsText: " + jsText);152	return cdp.Tasks{153		cdp.Navigate(urlLink),154		cdp.WaitNotPresent("pageLoading", cdp.ByID),155		cdp.WaitVisible("circle-race-title", cdp.ByID),156		cdp.Text("circle-race-title", resTitle),157		cdp.EvaluateAsDevTools("document.querySelector('.raceTitle .buttonsBox a') ? document.querySelector('.raceTitle .buttonsBox a').href : ''", resMediaURL),158		cdp.Evaluate(jsText, res),159	}160}161//------------------------------ Result runner ------------------------------- //162func jsGetResultRunner(sel string) (js string) {163	const funcJS = `function getText(sel) {164				var text = [];165				var elements = document.body.querySelectorAll(sel);166				//Skip the first row which is a header167				for(var i = 1; i < elements.length; i++) {168					var current = elements[i];169					var tdElements = current.querySelectorAll('td');170					var date = tdElements[0].contentText;171					var venueName = tdElements[1].innerHTML;172					var distance = tdElements[2].innerHTML;173					var sectionalData = tdElements[5].innerHTML;174					var finishingPos = tdElements[6].innerHTML;175					var weight = tdElements[12].innerHTML;176					var finishingTime = tdElements[15].innerHTML;177					var mediaURL = tdElements[0].querySelector('a') ? tdElements[0].querySelector('a').href : '';178					var competitorName = tdElements[8].textContent;179					var runnerInfo = [];180					runnerInfo.push(date);181					runnerInfo.push(venueName);182					runnerInfo.push(distance);183					runnerInfo.push(sectionalData);184					runnerInfo.push(finishingPos);185					runnerInfo.push(weight);186					runnerInfo.push(finishingTime);187					runnerInfo.push(mediaURL);188					runnerInfo.push(competitorName);189					190					text.push(runnerInfo);191				}192				return text193			 };`194	invokeFuncJS := `var a = getText('` + sel + `'); a;`195	return strings.Join([]string{funcJS, invokeFuncJS}, " ")196}197func getResultsRunner(urlLink string, resName *string, resSireName *string, resDamName *string, res *[][]string) cdp.Tasks {198	textSel := "#sortableTable tbody tr"199	jsText := jsGetResultRunner(textSel)200	// log.Println("jsText: " + jsText);201	return cdp.Tasks{202		cdp.Navigate(urlLink),203		cdp.WaitNotPresent("pageLoading", cdp.ByID),204		cdp.EvaluateAsDevTools("document.querySelector('.results-dog-details .ghName').textContent.trim();", resName),205		cdp.EvaluateAsDevTools("document.querySelector('.results-dog-details .runnerBlock .pedigree tbody tr td strong').innerHTML.trim();", resSireName),206		cdp.EvaluateAsDevTools("document.querySelector('.results-dog-details .runnerBlock .pedigree tbody tr td:last-child strong').innerHTML.trim();", resDamName),207		cdp.Evaluate(jsText, res),208	}209}...

modal.go

Source:modal.go

...3	. "github.com/siongui/godom"4)5var modal *Object6func SetModalTitle(title string) {7	//modal.QuerySelector(".modal-card-title").SetInnerHTML(title)8	modal.QuerySelector("#modal-title").SetInnerHTML(title)9}10func SetModalBody(b string) {11	modal.QuerySelector(".modal-card-body").SetInnerHTML(b)12}13func openModal() {14	Document.DocumentElement().ClassList().Add("is-clipped")15	modal.ClassList().Add("is-active")16}17func closeModal() {18	Document.DocumentElement().ClassList().Remove("is-clipped")19	modal.ClassList().Remove("is-active")20	//SetModalBody("")21	SetModalWords("")22	SetModalContent("")23	SetInputValue("")24	HideModalInput()25}26func SetModalContent(html string) {27	Document.GetElementById("modal-content").SetInnerHTML(html)28}29func SetModalWords(html string) {30	Document.GetElementById("words").SetInnerHTML(html)31}32func HideModalInput() {33	Document.GetElementById("modal-input-toggle").Set("checked", false)34}35func ShowModalInput() {36	Document.GetElementById("modal-input-toggle").Set("checked", true)37}38func SetupModal() {39	modal = Document.QuerySelector("div.modal")40	var closeElm []*Object41	closeElm = append(closeElm, modal.QuerySelector(".modal-background"))42	//closeElm = append(closeElm, modal.QuerySelector(".modal-close"))43	closeElm = append(closeElm, modal.QuerySelector(".modal-card-head .delete"))44	//closeElm = append(closeElm, modal.QuerySelector(".modal-card-foot .button"))45	for _, elm := range closeElm {46		elm.AddEventListener("click", func(e Event) {47			closeModal()48		})49	}50	Document.AddEventListener("keydown", func(e Event) {51		if e.KeyCode() == 27 {52			// ESC pressed53			closeModal()54		}55	})56}...

QuerySelector

Using AI Code Generation

1import (2func main() {3    doc, err := html.Parse(os.Stdin)4    if err != nil {5        fmt.Fprintf(os.Stderr, "findlinks1: %v6        os.Exit(1)7    }8    for _, link := range visit(nil, doc) {9        fmt.Println(link)10    }11}12func visit(links []string, n *html.Node) []string {13    if n.Type == html.ElementNode && n.Data == "a" {14        for _, a := range n.Attr {15            if a.Key == "href" {16                links = append(links, a.Val)17            }18        }19    }20    for c := n.FirstChild; c != nil; c = c.NextSibling {21        links = visit(links, c)22    }23}

QuerySelector

Using AI Code Generation

1import (2func main() {3	for _, url := range os.Args[1:] {4		doc, err := getDoc(url)5		if err != nil {6			log.Fatalf("getDoc: %v", err)7		}8		links, err := links(doc)9		if err != nil {10			log.Fatalf("links: %v", err)11		}12		for _, link := range links {13			fmt.Println(link)14		}15	}16}17func getDoc(url string) (*html.Node, error) {18	resp, err := http.Get(url)19	if err != nil {20	}21	defer resp.Body.Close()22	doc, err := html.Parse(resp.Body)23	if err != nil {24	}25}26func links(n *html.Node) ([]string, error) {27	nodes := ElementByID(n, "links")28	if nodes == nil {29		return nil, fmt.Errorf("no nodes found")30	}31	for _, node := range nodes {32		for _, a := range node.Attr {33			if a.Key == "href" {34				links = append(links, a.Val)35			}36		}37	}38}39func ElementByID(n *html.Node, id string) []*html.Node {40	if n.Type == html.ElementNode {41		for _, a := range n.Attr {42			if a.Key == "id" && a.Val == id {43				nodes = append(nodes, n)44			}45		}46	}47	for c := n.FirstChild; c != nil; c = c.NextSibling {48		nodes = append(nodes, ElementByID(c, id)...)49	}50}51import (52func main() {53	for _, url := range os.Args[1:] {54		doc, err := getDoc(url)55		if err != nil {56			log.Fatalf("getDoc: %v", err)57		}58		links, err := links(doc)59		if err != nil {60			log.Fatalf("links

QuerySelector

Using AI Code Generation

1import (2func main() {3	file, err := os.Open("index.html")4	if err != nil {5		log.Fatal(err)6	}7	doc, err := html.Parse(file)8	if err != nil {9		log.Fatal(err)10	}11	m := make(map[string]int)12	visit(m, doc)13	for k, v := range m {14		fmt.Println(k, v)15	}16}17func visit(m map[string]int, n *html.Node) {18	if n.Type == html.ElementNode {19	}20	for c := n.FirstChild; c != nil; c = c.NextSibling {21		visit(m, c)22	}23}24import (25func main() {26	file, err := os.Open("index.html")27	if err != nil {28		log.Fatal(err)29	}30	doc, err := html.Parse(file)31	if err != nil {32		log.Fatal(err)33	}34	m := make(map[string]int)35	visit(m, doc)36	for k, v := range m {37		fmt.Println(k, v)38	}39}40func visit(m map[string]int, n *html.Node) {41	if n.Type == html.ElementNode {42	}43	for c := n.FirstChild; c != nil; c = c.NextSibling {44		visit(m, c)45	}46}47import (48func main() {49	file, err := os.Open("index.html")50	if err != nil {51		log.Fatal(err)52	}53	doc := js.Global().Get("document").Call("querySelector", "body")54	fmt.Println(doc)55}56import (57func main() {58	file, err := os.Open("index.html")59	if err != nil {60		log.Fatal(err)61	}62	doc := js.Global().Get("document").Call("querySelectorAll", "body")

QuerySelector

Using AI Code Generation

1import (2func main() {3	for _, url := range os.Args[1:] {4		}5		doc, err := getHTMLDoc(url)6		if err != nil {7			log.Fatal(err)8		}

QuerySelector

Using AI Code Generation

1import (2func main() {3	if err != nil {4		log.Fatal(err)5	}6	defer res.Body.Close()7	if res.StatusCode != 200 {8		log.Fatalf("status code error: %d %s", res.StatusCode, res.Status)9	}10	doc, err := goquery.NewDocumentFromReader(res.Body)11	if err != nil {12		log.Fatal(err)13	}14	doc.Find("a").Each(func(index int, item *goquery.Selection) {15		href, _ := linkTag.Attr("href")16		fmt.Println(href)17	})18}

QuerySelector

Using AI Code Generation

1import (2func main() {3	if err != nil {4		log.Fatal(err)5	}6	defer res.Body.Close()7	if res.StatusCode != 200 {8		log.Fatalf("status code error: %d %s", res.StatusCode, res.Status)9	}10	doc, err := goquery.NewDocumentFromReader(res.Body)11	if err != nil {12		log.Fatal(err)13	}14	doc.Find("div").Each(func(i int, s *goquery.Selection) {15		band := s.Find("span").Text()16		title := s.Find("a").Text()17		fmt.Printf("Review %d: %s - %s\n", i, band, title)18	})19}20import (21func main() {22	if err != nil {23		log.Fatal(err)24	}25	defer res.Body.Close()

QuerySelector

Using AI Code Generation

1import (2func main() {3	resp, err := http.Get(url)4	if err != nil {5		log.Fatal(err)6	}7	defer resp.Body.Close()8	doc, err := html.Parse(resp.Body)9	if err != nil {10		log.Fatal(err)11	}12	node := QuerySelector(doc, "a", func(n *html.Node) bool {13			strings.HasPrefix(GetAttribute(n, "href"), "/doc")14	})15	fmt.Println(node)16}17func GetAttribute(n *html.Node, name string) string {18	for _, a := range n.Attr {19		if a.Key == name {20		}21	}22}23func QuerySelector(n *html.Node, tag string, predicate func(*html.Node) bool) *html.Node {24	if n.Type == html.ElementNode && n.Data == tag && predicate(n) {25	}26	for c := n.FirstChild; c != nil; c = c.NextSibling {27		if node := QuerySelector(c, tag, predicate); node != nil {28		}29	}30}31import (32func main() {33	resp, err := http.Get(url)34	if err != nil {35		log.Fatal(err)36	}37	defer resp.Body.Close()38	doc, err := html.Parse(resp.Body)39	if err != nil {40		log.Fatal(err)41	}42	nodes := QuerySelectorAll(doc, "a", func(n *html.Node

QuerySelector

Using AI Code Generation

1import (2func main() {3	resp, err := http.Get(url)4	if err != nil {5		log.Fatal(err)6	}7	defer resp.Body.Close()8	doc, err := html.Parse(resp.Body)9	if err != nil {10		log.Fatal(err)11	}12	nodes := ElementByTagName(doc, "a", "img")13	fmt.Println(nodes)14}15func ElementByTagName(doc *html.Node, name ...string) []*html.Node {16	for _, n := range name {17		nodes = append(nodes, visit(nil, doc, n)...)18	}19}20func visit(nodes []*html.Node, n *html.Node, name string) []*html.Node {21	if n.Type == html.ElementNode && n.Data == name {22		nodes = append(nodes, n)23	}24	for c := n.FirstChild; c != nil; c = c.NextSibling {25		nodes = visit(nodes, c, name)26	}27}

QuerySelector

Using AI Code Generation

1import (2func main() {3	doc, _ := html.Parse(res.Body)4	res.Body.Close()5	visit(nil, doc)6}7func visit(links []string, n *html.Node) {8	if n.Type == html.ElementNode && n.Data == "a" {9		for _, a := range n.Attr {10			if a.Key == "href" {11				links = append(links, a.Val)12			}13		}14	}15	for c := n.FirstChild; c != nil; c = c.NextSibling {16		visit(links, c)17	}18}19import (20func main() {21	if err != nil {22		log.Fatal(err)23	}24	doc, err := html.Parse(res.Body)25	res.Body.Close()26	if err != nil {27		log.Fatal(err)28	}29	links := visit(nil, doc)30	fmt.Println(links)31}32func visit(links []string, n *html.Node) []string {33	if n.Type == html.ElementNode && n.Data == "a" {34		for _, a := range n.Attr {35			if a.Key == "href" {36				links = append(links, a.Val)37			}38		}39	}40	for c := n.FirstChild; c != nil; c = c.NextSibling {41		links = visit(links, c)42	}43}44import (45func main() {46	if err != nil {47		log.Fatal(err)48	}49	doc, err := html.Parse(res.Body)50	res.Body.Close()

QuerySelector

Using AI Code Generation

1import (2func main() {3    if err != nil {4        fmt.Println("Error fetching URL. ", err)5    }6    defer res.Body.Close()7    doc, err := html.Parse(res.Body)8    if err != nil {9        fmt.Println("Error parsing HTML. ", err)10    }11    fmt.Println(val.Attr[1].Val)12}

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.