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How to use ElementsByJS method of rod Package

Best Rod code snippet using rod.ElementsByJS

query.go

...187}188// Elements returns all elements that match the css selector189// è¿åå CSS éæ©å¨å¹éçææåç´ 190func (p *Page) Elements(selector string) (Elements, error) {191	return p.ElementsByJS(evalHelper(js.Elements, selector))192}193// ElementsX returns all elements that match the XPath selector194// è¿åå XPath éæ©å¨å¹éçææåç´ 195func (p *Page) ElementsX(xpath string) (Elements, error) {196	return p.ElementsByJS(evalHelper(js.ElementsX, xpath))197}198// ElementsByJS returns the elements from the return value of the js199// ElementsByJS ä» js çè¿åå¼ä¸è¿ååç´ ã200func (p *Page) ElementsByJS(opts *EvalOptions) (Elements, error) {201	res, err := p.Evaluate(opts.ByObject())202	if err != nil {203		return nil, err204	}205	if res.Subtype != proto.RuntimeRemoteObjectSubtypeArray {206		return nil, &ErrExpectElements{res}207	}208	defer func() { err = p.Release(res) }()209	list, err := proto.RuntimeGetProperties{210		ObjectID:      res.ObjectID,211		OwnProperties: true,212	}.Call(p)213	if err != nil {214		return nil, err215	}216	elemList := Elements{}217	for _, obj := range list.Result {218		if obj.Name == "__proto__" || obj.Name == "length" {219			continue220		}221		val := obj.Value222		if val.Subtype != proto.RuntimeRemoteObjectSubtypeNode {223			return nil, &ErrExpectElements{val}224		}225		el, err := p.ElementFromObject(val)226		if err != nil {227			return nil, err228		}229		elemList = append(elemList, el)230	}231	return elemList, err232}233// Search for the given query in the DOM tree until the result count is not zero, before that it will keep retrying.234// å¨DOMæ ä¸æç´¢ç»å®çæ¥è¯¢ï¼ç´å°ç»æè®¡æ°ä¸ä¸ºé¶ï¼å¨æ¤ä¹åï¼å®å°ä¸æéè¯ã235// The query can be plain text or css selector or xpath.236// æ¥è¯¢å¯ä»¥æ¯çº¯ææ¬ãcsséæ©å¨æxpathã237// It will search nested iframes and shadow doms too.238// å®ä¹ä¼æç´¢åµå¥çiframesåå½±ådomã239func (p *Page) Search(query string) (*SearchResult, error) {240	sr := &SearchResult{241		page:    p,242		restore: p.EnableDomain(proto.DOMEnable{}),243	}244	err := utils.Retry(p.ctx, p.sleeper(), func() (bool, error) {245		if sr.DOMPerformSearchResult != nil {246			_ = proto.DOMDiscardSearchResults{SearchID: sr.SearchID}.Call(p)247		}248		res, err := proto.DOMPerformSearch{249			Query:                     query,250			IncludeUserAgentShadowDOM: true,251		}.Call(p)252		if err != nil {253			return true, err254		}255		sr.DOMPerformSearchResult = res256		if res.ResultCount == 0 {257			return false, nil258		}259		result, err := proto.DOMGetSearchResults{260			SearchID:  res.SearchID,261			FromIndex: 0,262			ToIndex:   1,263		}.Call(p)264		if err != nil {265			// when the page is still loading the search result is not ready266			// å½é¡µé¢ä»ç¶å¨å è½½æ¶ï¼æ¤æ¶çæç´¢ç»æå°æªåå¤å¥½ã267			if errors.Is(err, cdp.ErrCtxNotFound) ||268				errors.Is(err, cdp.ErrSearchSessionNotFound) {269				return false, nil270			}271			return true, err272		}273		id := result.NodeIds[0]274		// TODO: This is definitely a bad design of cdp, hope they can optimize it in the future.275		// It's unnecessary to ask the user to explicitly call it.276		// æ²¡æå¿è¦è¦æ±ç¨æ·æç¡®å°è°ç¨å®ã277		//278		// When the id is zero, it means the proto.DOMDocumentUpdated has fired which will279		// invlidate all the existing NodeID. We have to call proto.DOMGetDocument280		// to reset the remote browser's tracker.281		// å½idä¸º0æ¶ï¼æå³çproto.DOMDocumentUpdatedå·²ç»è§¦åï¼å®å°è°ç¨ææç°æçNodeIDã282		// æä»¬å¿é¡»è°ç¨proto.DOMGetDocumentæ¥éç½®è¿ç¨æµè§å¨çè·è¸ªå¨ã283		if id == 0 {284			_, _ = proto.DOMGetDocument{}.Call(p)285			return false, nil286		}287		el, err := p.ElementFromNode(&proto.DOMNode{NodeID: id})288		if err != nil {289			return true, err290		}291		sr.First = el292		return true, nil293	})294	if err != nil {295		return nil, err296	}297	return sr, nil298}299// SearchResult handler300type SearchResult struct {301	*proto.DOMPerformSearchResult302	page    *Page303	restore func()304	// First element in the search result305	// å¨æç´¢ç»æä¸çç¬¬ä¸ä¸ªåç´ 306	First *Element307}308// Get l elements at the index of i from the remote search result.309// ä»è¿ç¨æç´¢ç»æä¸è·åç´¢å¼ä¸ºiçlä¸ªåç´ ã310func (s *SearchResult) Get(i, l int) (Elements, error) {311	result, err := proto.DOMGetSearchResults{312		SearchID:  s.SearchID,313		FromIndex: i,314		ToIndex:   i + l,315	}.Call(s.page)316	if err != nil {317		return nil, err318	}319	list := Elements{}320	for _, id := range result.NodeIds {321		el, err := s.page.ElementFromNode(&proto.DOMNode{NodeID: id})322		if err != nil {323			return nil, err324		}325		list = append(list, el)326	}327	return list, nil328}329// All returns all elements330// è¿åææåç´ 331func (s *SearchResult) All() (Elements, error) {332	return s.Get(0, s.ResultCount)333}334// Release the remote search result335// éæ¾æç´¢ç»æ336func (s *SearchResult) Release() {337	s.restore()338	_ = proto.DOMDiscardSearchResults{SearchID: s.SearchID}.Call(s.page)339}340type raceBranch struct {341	condition func(*Page) (*Element, error)342	callback  func(*Element) error343}344// RaceContext stores the branches to race345// åå¨äº race çåæ¯346type RaceContext struct {347	page     *Page348	branches []*raceBranch349}350// Race creates a context to race selectors351// ä¸º race éæ©å¨åå»ºäºä¸ä¸ª RaceContext352func (p *Page) Race() *RaceContext {353	return &RaceContext{page: p}354}355// Element the doc is similar to MustElement356// ç±»ä¼¼äº MustElement357func (rc *RaceContext) Element(selector string) *RaceContext {358	rc.branches = append(rc.branches, &raceBranch{359		condition: func(p *Page) (*Element, error) { return p.Element(selector) },360	})361	return rc362}363// ElementFunc takes a custom function to determine race success364// ElementFunc éç¨èªå®ä¹å½æ°ç¡®å® race æå365func (rc *RaceContext) ElementFunc(fn func(*Page) (*Element, error)) *RaceContext {366	rc.branches = append(rc.branches, &raceBranch{367		condition: fn,368	})369	return rc370}371// ElementX the doc is similar to ElementX372// ç±»ä¼¼äº ElementX373func (rc *RaceContext) ElementX(selector string) *RaceContext {374	rc.branches = append(rc.branches, &raceBranch{375		condition: func(p *Page) (*Element, error) { return p.ElementX(selector) },376	})377	return rc378}379// ElementR the doc is similar to ElementR380//ç±»ä¼¼äº ElementR381func (rc *RaceContext) ElementR(selector, regex string) *RaceContext {382	rc.branches = append(rc.branches, &raceBranch{383		condition: func(p *Page) (*Element, error) { return p.ElementR(selector, regex) },384	})385	return rc386}387// ElementByJS the doc is similar to MustElementByJS388// ç±»ä¼¼äº MustELementByJS389func (rc *RaceContext) ElementByJS(opts *EvalOptions) *RaceContext {390	rc.branches = append(rc.branches, &raceBranch{391		condition: func(p *Page) (*Element, error) { return p.ElementByJS(opts) },392	})393	return rc394}395// Handle adds a callback function to the most recent chained selector.396// Handle ä¸ºæè¿çé¾å¼éæ©å¨æ·»å ä¸ä¸ªåè°å½æ°ã397// The callback function is run, if the corresponding selector is398// present first, in the Race condition.399// å¦æç¸åºçéæ©å¨é¦ååºç°å¨ trace æ¡ä»¶ä¸ï¼åè°å½æ°å°±ä¼è¿è¡ã400func (rc *RaceContext) Handle(callback func(*Element) error) *RaceContext {401	rc.branches[len(rc.branches)-1].callback = callback402	return rc403}404// Do the race405// æ§è¡ Trace406func (rc *RaceContext) Do() (*Element, error) {407	var el *Element408	err := utils.Retry(rc.page.ctx, rc.page.sleeper(), func() (stop bool, err error) {409		for _, branch := range rc.branches {410			bEl, err := branch.condition(rc.page.Sleeper(NotFoundSleeper))411			if err == nil {412				el = bEl.Sleeper(rc.page.sleeper)413				if branch.callback != nil {414					err = branch.callback(el)415				}416				return true, err417			} else if !errors.Is(err, &ErrElementNotFound{}) {418				return true, err419			}420		}421		return422	})423	return el, err424}425// Has an element that matches the css selector426// å¤ææ¯å¦æåCSSéæ©å¨ç¸å¹éçåç´ 427func (el *Element) Has(selector string) (bool, *Element, error) {428	el, err := el.Element(selector)429	if errors.Is(err, &ErrElementNotFound{}) {430		return false, nil, nil431	}432	return err == nil, el, err433}434// HasX an element that matches the XPath selector435// å¤ææ¯å¦æåXPathç¸å¹éçåç´ 436func (el *Element) HasX(selector string) (bool, *Element, error) {437	el, err := el.ElementX(selector)438	if errors.Is(err, &ErrElementNotFound{}) {439		return false, nil, nil440	}441	return err == nil, el, err442}443// HasR returns true if a child element that matches the css selector and its text matches the jsRegex.444// å¦ææä¸ä¸ªç¬¦åcsséæ©å¨çååç´ ï¼å¹¶ä¸å¶ææ¬ç¬¦åjsRegexï¼åHasRè¿åtrueã445func (el *Element) HasR(selector, jsRegex string) (bool, *Element, error) {446	el, err := el.ElementR(selector, jsRegex)447	if errors.Is(err, &ErrElementNotFound{}) {448		return false, nil, nil449	}450	return err == nil, el, err451}452// Element returns the first child that matches the css selector453// è¿åç¬¬ä¸ä¸ªåCSSéæ©å¨å¹éçååç´ 454func (el *Element) Element(selector string) (*Element, error) {455	return el.ElementByJS(evalHelper(js.Element, selector))456}457// ElementR returns the first child element that matches the css selector and its text matches the jsRegex.458// ElementRè¿åç¬¦åcsséæ©å¨çç¬¬ä¸ä¸ªååç´ ï¼å¹¶ä¸å¶ææ¬ç¬¦åjsRegexã459func (el *Element) ElementR(selector, jsRegex string) (*Element, error) {460	return el.ElementByJS(evalHelper(js.ElementR, selector, jsRegex))461}462// ElementX returns the first child that matches the XPath selector463// è¿åç¬¬ä¸ä¸ªå XPath éæ©å¨ç¸å¹éçååç´ 464func (el *Element) ElementX(xPath string) (*Element, error) {465	return el.ElementByJS(evalHelper(js.ElementX, xPath))466}467// ElementByJS returns the element from the return value of the js468// ElementByJS ä» js çè¿åå¼ä¸è¿åè¯¥åç´ ã469func (el *Element) ElementByJS(opts *EvalOptions) (*Element, error) {470	e, err := el.page.Sleeper(NotFoundSleeper).ElementByJS(opts.This(el.Object))471	if err != nil {472		return nil, err473	}474	return e.Sleeper(el.sleeper), nil475}476// Parent returns the parent element in the DOM tree477// è¿å DOM æ ä¸çç¶åç´ ã478func (el *Element) Parent() (*Element, error) {479	return el.ElementByJS(Eval(`() => this.parentElement`))480}481// Parents that match the selector482// åéæ©å¨å¹éçç¶åç´ ã483func (el *Element) Parents(selector string) (Elements, error) {484	return el.ElementsByJS(evalHelper(js.Parents, selector))485}486// Next returns the next sibling element in the DOM tree487// è¿åDOMæ ä¸çä¸ä¸ä¸ªåçº§åç´ 488func (el *Element) Next() (*Element, error) {489	return el.ElementByJS(Eval(`() => this.nextElementSibling`))490}491// Previous returns the previous sibling element in the DOM tree492// è¿åDOMæ ä¸çä¸ä¸ä¸ªåçº§åç´ 493func (el *Element) Previous() (*Element, error) {494	return el.ElementByJS(Eval(`() => this.previousElementSibling`))495}496// Elements returns all elements that match the css selector497// è¿åå CSS éæ©å¨ç¸å¹éçææåç´ 498func (el *Element) Elements(selector string) (Elements, error) {499	return el.ElementsByJS(evalHelper(js.Elements, selector))500}501// ElementsX returns all elements that match the XPath selector502// è¿åå XPath éæ©å¨ç¸å¹éçææåç´ 503func (el *Element) ElementsX(xpath string) (Elements, error) {504	return el.ElementsByJS(evalHelper(js.ElementsX, xpath))505}506// ElementsByJS returns the elements from the return value of the js507// ElementsByJS ä» js çè¿åå¼ä¸è¿ååç´ ã508func (el *Element) ElementsByJS(opts *EvalOptions) (Elements, error) {509	return el.page.Context(el.ctx).ElementsByJS(opts.This(el.Object))510}...

query_test.go

Source: query_test.go

...249	_, err := p.ElementByJS(rod.Eval(`1`))250	t.Is(err, &rod.ErrExpectElement{})251	t.Eq(err.Error(), "expect js to return an element, but got: {\"type\":\"number\",\"value\":1,\"description\":\"1\"}")252}253func (t T) PageElementsByJS() {254	p := t.page.MustNavigate(t.srcFile("fixtures/selector.html")).MustWaitLoad()255	t.Len(p.MustElementsByJS("document.querySelectorAll('button')"), 4)256	_, err := p.ElementsByJS(rod.Eval(`[1]`))257	t.Is(err, &rod.ErrExpectElements{})258	t.Eq(err.Error(), "expect js to return an array of elements, but got: {\"type\":\"number\",\"value\":1,\"description\":\"1\"}")259	_, err = p.ElementsByJS(rod.Eval(`1`))260	t.Eq(err.Error(), "expect js to return an array of elements, but got: {\"type\":\"number\",\"value\":1,\"description\":\"1\"}")261	_, err = p.ElementsByJS(rod.Eval(`foo()`))262	t.Err(err)263	t.mc.stubErr(1, proto.RuntimeGetProperties{})264	_, err = p.ElementsByJS(rod.Eval(`[document.body]`))265	t.Err(err)266	t.mc.stubErr(4, proto.RuntimeCallFunctionOn{})267	t.Err(p.Elements("button"))268}269func (t T) PageElementTimeout() {270	page := t.page.MustNavigate(t.blank())271	start := time.Now()272	_, err := page.Timeout(300 * time.Millisecond).Element("not-exists")273	t.Is(err, context.DeadlineExceeded)274	t.Gte(time.Since(start), 300*time.Millisecond)275}276func (t T) PageElementMaxRetry() {277	page := t.page.MustNavigate(t.blank())278	s := func() utils.Sleeper { return utils.CountSleeper(5) }...

ElementsByJS

Using AI Code Generation

1import (2func main() {3	browser := rod.New().ControlURL(launcher.New().MustLaunch()).MustConnect()4	page.MustWaitLoad()5	input := page.MustElement("input[name='q']")6	input.MustInput("rod")7	page.MustElement("input[name='btnK']").MustClick()8	page.MustWaitLoad()9	links := page.MustElementsByJS(`10    Array.from(document.querySelectorAll('h3')).map(el => el.innerText)11	for _, link := range links {12		println(link.MustText())13	}14}

ElementsByJS

Using AI Code Generation

1import (2func main() {3    browser := rod.New().MustConnect()4    page.MustElement("input[name=q]").MustInput("rod").MustPress(proto.InputKeyEventEnter)5    page.MustElementByJS(`[href="/search?q=rod&oq=rod"]`).MustClick()6    fmt.Println(page.MustInfo().URL)7}

ElementsByJS

Using AI Code Generation

1import (2func main() {3	l := launcher.New().Headless(false)4	defer l.Cleanup()5	page.MustElement("#hplogo").MustWaitLoad()6	page.MustElement("#hplogo").MustScrollIntoView()7	page.MustElement("#hplogo").MustHover()8	page.MustElement("#hplogo").MustClick()9	page.MustElement("#hplogo").MustWaitStable()10	page.MustElement("#hplogo").MustWaitInvisible()11	page.MustElement("#hplogo").MustWaitVisible()12	page.MustElement("#hplogo").MustWaitReady()13	page.MustElement("#hplogo").MustWaitRequestIdle()14	page.MustElement("#hplogo").MustWaitNavigation()15	page.MustElement("#hplogo").MustWaitLoad()16	page.MustElement("#hplogo").MustWaitStable()17	page.MustElement("#hplogo").MustWaitInvisible()18	page.MustElement("#hplogo").MustWaitVisible()19	page.MustElement("#hplogo").MustWaitReady()20	page.MustElement("#hplogo").MustWaitRequestIdle()21	page.MustElement("#hplogo").MustWaitNavigation()22	page.MustElement("#hplogo").MustWaitLoad()23	page.MustElement("#hplogo").MustWaitStable()24	page.MustElement("#hplogo").MustWaitInvisible()25	page.MustElement("#hplogo").MustWaitVisible()26	page.MustElement("#hplogo").MustWaitReady()27	page.MustElement("#hplogo").MustWaitRequestIdle()28	page.MustElement("#hplogo").MustWaitNavigation()29	page.MustElement("#hplogo").MustWaitLoad()30	page.MustElement("#hplogo").MustWaitStable()31	page.MustElement("#hplogo").MustWaitInvisible()32	page.MustElement("#hplogo").MustWaitVisible()33	page.MustElement("#hplogo").MustWaitReady()34	page.MustElement("#hplogo").MustWaitRequestIdle()35	page.MustElement("#hplogo").MustWaitNavigation()36	page.MustElement("#hplogo").MustWaitLoad()37	page.MustElement("#hplogo").MustWaitStable()38	page.MustElement("#hplogo").MustWaitInvisible()39	page.MustElement("#hplogo").MustWaitVisible()40	page.MustElement("#hplogo").MustWaitReady()41	page.MustElement("#hplogo").MustWaitRequestIdle()42	page.MustElement("#hplogo").Must

ElementsByJS

Using AI Code Generation

1import (2func main() {3	l := launcher.New().Headless(false)4	defer l.Cleanup()5	browser := rod.New().ControlURL(l).MustConnect()6	page := browser.MustPage("")7	page.MustElement("#tsf > div:nth-child(2) > div > div.FPdoLc.tfB0Bf > center > input.gNO89b").MustClick()8	page.MustElement("#tsf > div:nth-child(2) > div > div.FPdoLc.tfB0Bf > center > input.gNO89b").MustClick()9	page.MustElement("#tsf > div:nth-child(2) > div > div.FPdoLc.tfB0Bf > center > input.gNO89b").MustClick()10	page.MustElement("#tsf > div:nth-child(2) > div > div.FPdoLc.tfB0Bf > center > input.gNO89b").MustClick()11	page.MustElement("#tsf > div:nth-child(2) > div > div.FPdoLc.tfB0Bf > center > input.gNO89b").MustClick()12	page.MustElement("#tsf > div:nth-child(2) > div > div.FPdoLc.tfB0Bf > center > input.gNO89b").MustClick()13	page.MustElement("#tsf > div:nth-child(2) > div > div.FPdoLc.tfB0Bf > center > input.gNO89b").MustClick()14	page.MustElement("#tsf > div:nth-child(2) > div > div.FPdoLc.tfB0Bf > center > input.gNO89b").MustClick()15	page.MustElement("#tsf > div:nth-child(2) > div > div.FPdoLc.tfB0Bf > center > input.gNO89b").MustClick()16	page.MustElement("#tsf > div:nth-child(2) > div > div.FPdoLc.tfB0Bf > center > input.gNO89b").MustClick()17	page.MustElement("#tsf > div:nth-child(2) > div > div.FPdoLc.tfB0Bf > center > input.gNO89

ElementsByJS

Using AI Code Generation

1import (2func main() {3    l := launcher.New().Bin("/usr/bin/chromium-browser").Headless(false).MustLaunch()4    defer l.Close()5    page.MustElement("input").MustInput("rod").MustPress(input.Enter)6    page.MustElement("input").MustInput("rod").MustPress(input.Enter).MustElement("h3").MustClick()

ElementsByJS

Using AI Code Generation

1import (2func main() {3	browser := rod.New().ControlURL(launcher.New().MustLaunch()).MustConnect()4	input := page.MustElementByJS(`document.querySelector("input")`)5	input.MustInput("rod")6	fmt.Println(input.MustProperty("value").String())7}8import (9func main() {10	browser := rod.New().ControlURL(launcher.New().MustLaunch()).MustConnect()11	input := page.MustElementByJS(`document.querySelector("input")`)12	input.MustInput("rod")13	fmt.Println(input.MustProperty("value").String())14}15import (16func main() {17	browser := rod.New().ControlURL(launcher.New().MustLaunch()).MustConnect()18	input := page.MustElementByJS(`document.querySelector("input")`)19	input.MustInput("rod")20	fmt.Println(input.MustProperty("value").String())21}22import (

ElementsByJS

Using AI Code Generation

1import (2func main() {3	browser := rod.New().ControlURL(launcher.New().MustLaunch()).MustConnect()4	elements := page.MustElements(".example")5	for _, element := range elements {6		fmt.Println(element.MustText())7	}8}9page.ElementByXPath(xPath string)10import (11func main() {12	browser := rod.New().ControlURL(launcher.New().MustLaunch()).MustConnect()13	fmt.Println(element.MustText())14}15page.ElementsByXPath(xPath string)

ElementsByJS

Using AI Code Generation

1import (2func main() {3	browser := rod.New().Connect()4	defer browser.Close()5	page.ElementByJS(`document.querySelector("a[href='/gp/help/customer/display.html']").click()`)6	text := page.ElementByJS(`document.querySelector("h1.a-spacing-small").textContent`).Text()7	fmt.Println(text)8}

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