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Rod
rod
ensureJSHelper

How to use ensureJSHelper method of rod Package

Best Rod code snippet using rod.ensureJSHelper

page_eval.go

Source:page_eval.go

...199	for _, arg := range opts.JSArgs {200		if obj, ok := arg.(*proto.RuntimeRemoteObject); ok { // remote object201			formated = append(formated, &proto.RuntimeCallArgument{ObjectID: obj.ObjectID})202		} else if obj, ok := arg.(*js.Function); ok { // js helper203			id, err := p.ensureJSHelper(obj)204			if err != nil {205				return nil, err206			}207			formated = append(formated, &proto.RuntimeCallArgument{ObjectID: id})208		} else { // plain json data209			formated = append(formated, &proto.RuntimeCallArgument{Value: gson.New(arg)})210		}211	}212	return formated, nil213}214// Check the doc of EvalHelper215func (p *Page) ensureJSHelper(fn *js.Function) (proto.RuntimeRemoteObjectID, error) {216	jsCtxID, err := p.getJSCtxID()217	if err != nil {218		return "", err219	}220	fnID, has := p.getHelper(jsCtxID, js.Functions.Name)221	if !has {222		res, err := proto.RuntimeCallFunctionOn{223			ObjectID:            jsCtxID,224			FunctionDeclaration: js.Functions.Definition,225		}.Call(p)226		if err != nil {227			return "", err228		}229		fnID = res.Result.ObjectID230		p.setHelper(jsCtxID, js.Functions.Name, fnID)231	}232	id, has := p.getHelper(jsCtxID, fn.Name)233	if !has {234		for _, dep := range fn.Dependencies {235			_, err := p.ensureJSHelper(dep)236			if err != nil {237				return "", err238			}239		}240		res, err := proto.RuntimeCallFunctionOn{241			ObjectID:  jsCtxID,242			Arguments: []*proto.RuntimeCallArgument{{ObjectID: fnID}},243			FunctionDeclaration: fmt.Sprintf(244				// we only need the object id, but the cdp will return the whole function string.245				// So we override the toString to reduce the overhead.246				"functions => { const f = functions.%s = %s; f.toString = () => 'fn'; return f }",247				fn.Name, fn.Definition,248			),249		}.Call(p)...

ensureJSHelper

Using AI Code Generation

1import (2func main() {3	browser := rod.New().ControlURL(launcher.New().Headless(false).MustLaunch()).MustConnect()4	defer browser.MustClose()5	page := browser.MustPage("")6	page.MustElement("input[name=q]").MustInput("Rod Page")7	page.MustElement("input[name=btnK]").MustClick()8}

ensureJSHelper

Using AI Code Generation

1import (2func main() {3	page.MustEval(`document.querySelector("input[name=q]").value = "rod"`)4	page.MustElement("input[name=q]").MustPress(proto.InputKeyEventEnter)5	value, err := page.EvalE(`document.querySelector("input[name=q]").value`)6	fmt.Println(value, err)7	value, err = page.Eval(`document.querySelector("input[name=q]").value`)8	fmt.Println(value, err)9	value, err = page.Eval(`document.querySelector("input[name=q]").value`)10	fmt.Println(value, err)11	value, err = page.Eval(`document.querySelector("input[name=q]").value`)12	fmt.Println(value, err)13	value, err = page.Eval(`document.querySelector("input[name=q]").value`)14	fmt.Println(value, err)15	value, err = page.Eval(`document.querySelector("input[name=q]").value`)16	fmt.Println(value, err)17	value, err = page.Eval(`document.querySelector("input[name=q]").value`)18	fmt.Println(value, err)19}20import (21func main() {

ensureJSHelper

Using AI Code Generation

1import 'package:rod/rod.dart';2void main() async {3  var rod = await Rod.create();4  await rod.ensureJSHelper();5  await rod.close();6}7import 'package:rod/rod.dart';8void main() async {9  var rod = await Rod.create();10  await rod.ensureJSHelper();11  await rod.close();12}13import 'package:rod/rod.dart';14void main() async {15  var rod = await Rod.create();16  await rod.ensureJSHelper();17  await rod.close();18}19import 'package:rod/rod.dart';20void main() async {21  var rod = await Rod.create();22  await rod.ensureJSHelper();23  await rod.close();24}25import 'package:rod/rod.dart';26void main() async {27  var rod = await Rod.create();28  await rod.ensureJSHelper();29  await rod.close();30}31import 'package:rod/rod.dart';32void main() async {33  var rod = await Rod.create();34  await rod.ensureJSHelper();35  await rod.close();36}37import 'package:rod/rod.dart';38void main() async {39  var rod = await Rod.create();40  await rod.ensureJSHelper();41  await rod.close();42}43import 'package:rod/rod.dart';44void main() async {45  var rod = await Rod.create();46  await rod.ensureJSHelper();47  await rod.close();48}49import 'package:rod/rod.dart';50void main() async {51  var rod = await Rod.create();52  await rod.ensureJSHelper();53  await rod.close();54}55import 'package:rod/rod.dart';56void main()

ensureJSHelper

Using AI Code Generation

1import (2func main() {3	browser := rod.New().ControlURL(launcher.New().Headless(false).MustLaunch()).MustConnect()4	page.MustWaitLoad()5	title := page.MustElement("title").MustText()6	fmt.Println(title)7	result := page.MustEvaluate("1 + 2").Int()8	fmt.Println(result)9	url := page.MustInfo().URL10	fmt.Println(url)11	cookies := page.MustCookies()12	fmt.Println(cookies)13	html := page.MustHTML()14	fmt.Println(html)15	html = page.MustHTML("title", "meta", "div")16	fmt.Println(html)17	html = page.MustHTML("title", "meta", "div", &rod.HTMLOptions{18	})19	fmt.Println(html)20	html = page.MustHTML("title", "meta", "div", &rod.HTMLOptions{21	}, rod.Timeout(1))22	fmt.Println(html)23	html = page.MustHTML("title", "meta", "div", &rod.HTMLOptions{24	}, rod.Timeout(1), rod.Debug(true))

ensureJSHelper

Using AI Code Generation

1import (2func main() {3	browser := rod.New().ControlURL(launcher.New().MustLaunch()).MustConnect()4	defer browser.MustClose()5	html, err := page.HTML()6	if err != nil {7		log.Fatal(err)8	}9	fmt.Println(html)10	text, err := page.Text()11	if err != nil {12		log.Fatal(err)13	}14	fmt.Println(text)15	title, err := page.Title()16	if err != nil {17		log.Fatal(err)18	}19	fmt.Println(title)20	url, err := page.URL()21	if err != nil {22		log.Fatal(err)23	}24	fmt.Println(url)25	cookies, err := page.Cookies()26	if err != nil {27		log.Fatal(err)28	}29	fmt.Println(cookies)30	viewport, err := page.Viewport()31	if err != nil {32		log.Fatal(err)33	}34	fmt.Println(viewport)35	browser2 := page.Browser()36	fmt.Println(browser2)37	window := page.Window()38	fmt.Println(window)39	parentFrame := page.ParentFrame()40	fmt.Println(parentFrame)41	childFrames, err := page.ChildFrames()42	if err != nil {43		log.Fatal(err)44	}45	fmt.Println(childFrames)46	element, err := page.Element("input")47	if err != nil {48		log.Fatal(err)49	}50	fmt.Println(element)51	elements, err := page.Elements("input")52	if err != nil {53		log.Fatal(err)54	}55	fmt.Println(elements)56	elementR, err := page.ElementR("input")57	if err != nil {58		log.Fatal(err)59	}

ensureJSHelper

Using AI Code Generation

1rod.ensureJSHelper()2rod.ensureJSHelper()3rod.ensureJSHelper()4rod.ensureJSHelper()5rod.ensureJSHelper()6rod.ensureJSHelper()7rod.ensureJSHelper()8rod.ensureJSHelper()9rod.ensureJSHelper()10rod.ensureJSHelper()11rod.ensureJSHelper()12rod.ensureJSHelper()13rod.ensureJSHelper()14rod.ensureJSHelper()15rod.ensureJSHelper()16rod.ensureJSHelper()

ensureJSHelper

Using AI Code Generation

1import (2func (b *Browser) EnsureJSHelper(ctx context.Context) error {3	if b.jsHelper != nil {4	}5	page := b.MustPage("")6	defer page.MustClose()7	_, err := page.EvalOnNewDocument(ctx, kit.ReadFile("helper.js"))8	if err != nil {9	}10}11func (p *Page) EnsureJSHelper(ctx context.Context) error {12	return p.browser.EnsureJSHelper(ctx)13}14func (e *Element) EnsureJSHelper(ctx context.Context) error {15	return e.page.EnsureJSHelper(ctx)16}

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