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How to use getJSCtxID method of rod Package

Best Rod code snippet using rod.getJSCtxID

page_eval.go

Source:page_eval.go

...141		FunctionDeclaration: opts.formatToJSFunc(),142		Arguments:           args,143	}144	if opts.ThisObj == nil {145		req.ObjectID, err = p.getJSCtxID()146		if err != nil {147			return nil, err148		}149	} else {150		req.ObjectID = opts.ThisObj.ObjectID151	}152	res, err := req.Call(p)153	if err != nil {154		return nil, err155	}156	if res.ExceptionDetails != nil {157		return nil, &ErrEval{res.ExceptionDetails}158	}159	return res.Result, nil160}161// Expose fn to the page's window object with the name. The exposure survives reloads.162// Call stop to unbind the fn.163func (p *Page) Expose(name string, fn func(gson.JSON) (interface{}, error)) (stop func() error, err error) {164	bind := "_" + utils.RandString(8)165	err = proto.RuntimeAddBinding{Name: bind}.Call(p)166	if err != nil {167		return168	}169	code := fmt.Sprintf(`(%s)("%s", "%s")`, js.ExposeFunc.Definition, name, bind)170	_, err = p.Evaluate(Eval(code))171	if err != nil {172		return173	}174	remove, err := p.EvalOnNewDocument(code)175	if err != nil {176		return177	}178	p, cancel := p.WithCancel()179	stop = func() error {180		defer cancel()181		err := remove()182		if err != nil {183			return err184		}185		return proto.RuntimeRemoveBinding{Name: bind}.Call(p)186	}187	go p.EachEvent(func(e *proto.RuntimeBindingCalled) {188		if e.Name == bind {189			payload := gson.NewFrom(e.Payload)190			res, err := fn(payload.Get("req"))191			code := fmt.Sprintf("(res, err) => %s(res, err)", payload.Get("cb").Str())192			_, _ = p.Evaluate(Eval(code, res, err))193		}194	})()195	return196}197func (p *Page) formatArgs(opts *EvalOptions) ([]*proto.RuntimeCallArgument, error) {198	formated := []*proto.RuntimeCallArgument{}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)250		if err != nil {251			return "", err252		}253		id = res.Result.ObjectID254		p.setHelper(jsCtxID, fn.Name, id)255	}256	return id, nil257}258func (p *Page) getHelper(jsCtxID proto.RuntimeRemoteObjectID, name string) (proto.RuntimeRemoteObjectID, bool) {259	p.helpersLock.Lock()260	defer p.helpersLock.Unlock()261	if p.helpers == nil {262		p.helpers = map[proto.RuntimeRemoteObjectID]map[string]proto.RuntimeRemoteObjectID{}263	}264	list, ok := p.helpers[jsCtxID]265	if !ok {266		list = map[string]proto.RuntimeRemoteObjectID{}267		p.helpers[jsCtxID] = list268	}269	id, ok := list[name]270	return id, ok271}272func (p *Page) setHelper(jsCtxID proto.RuntimeRemoteObjectID, name string, fnID proto.RuntimeRemoteObjectID) {273	p.helpersLock.Lock()274	defer p.helpersLock.Unlock()275	p.helpers[jsCtxID][name] = fnID276}277// Returns the page's window object, the page can be an iframe278func (p *Page) getJSCtxID() (proto.RuntimeRemoteObjectID, error) {279	p.jsCtxLock.Lock()280	defer p.jsCtxLock.Unlock()281	if *p.jsCtxID != "" {282		return *p.jsCtxID, nil283	}284	if !p.IsIframe() {285		obj, err := proto.RuntimeEvaluate{Expression: "window"}.Call(p)286		if err != nil {287			return "", err288		}289		*p.jsCtxID = obj.Result.ObjectID290		p.helpersLock.Lock()291		p.helpers = nil292		p.helpersLock.Unlock()...

getJSCtxID

Using AI Code Generation

1import (2func main() {3    fmt.Println(page.GetJSCtxID())4}5import (6func main() {7    fmt.Println(page.GetJSCtxID())8}9import (10func main() {11    fmt.Println(page.GetJSCtxID())12}13import (14func main() {

getJSCtxID

Using AI Code Generation

1import (2func main() {3	browser := rod.New().Connect()4	time.Sleep(time.Second * 3)5	ctxID := page.GetJSCtxID()6	fmt.Println("ctxID: ", ctxID)7	time.Sleep(time.Second * 3)8	utils.E(page.Eval(`console.log("hello world")`))9	time.Sleep(time.Second * 3)10	utils.E(page.Eval(`console.log("hello world")`))11	time.Sleep(time.Second * 3)12	utils.E(page.Eval(`console.log("hello world")`))13	time.Sleep(time.Second * 3)14	utils.E(page.Eval(`console.log("hello world")`))15	time.Sleep(time.Second * 3)16	utils.E(page.Eval(`console.log("hello world")`))17	time.Sleep(time.Second * 3)18	utils.E(page.Eval(`console.log("hello world")`))19	time.Sleep(time.Second * 3)20	utils.E(page.Eval(`console.log("hello world")`))21	time.Sleep(time.Second * 3)22	utils.E(page.Eval(`console.log("hello world")`))23	time.Sleep(time.Second * 3)24	utils.E(page.Eval(`console.log("hello world")`))25	time.Sleep(time.Second * 3)26	utils.E(page.Eval(`console.log("hello

getJSCtxID

Using AI Code Generation

1import (2func main() {3	fmt.Println(page.GetJSCtxID())4}5import (6func main() {7	fmt.Println(page.GetJSCtxID())8}9import (10func main() {11	fmt.Println(page.GetJSCtxID())12}13import (14func main() {15	fmt.Println(page.GetJSCtxID())16}17import (18func main() {19	fmt.Println(page.GetJSCtxID())20}21import (22func main() {23	fmt.Println(page.GetJSCtxID())24}25import (26func main() {27	fmt.Println(page.GetJSCtxID())28}29import (30func main() {

getJSCtxID

Using AI Code Generation

1import (2func main() {3	browser := rod.New().MustConnect()4	defer browser.MustClose()5	defer page.MustClose()6	ctxID := page.MustGetJSCtxID()7	fmt.Println("Context ID: ", ctxID)8}

getJSCtxID

Using AI Code Generation

1import (2func main() {3    b := rod.New().Connect()4    jsctxID, err := page.GetJSCtxID()5    if err != nil {6        fmt.Println(err)7    }8    fmt.Println(jsctxID)9}10import (11func main() {12    b := rod.New().Connect()13    runtime, err := page.GetRuntime()14    if err != nil {15        fmt.Println(err)16    }17    fmt.Println(runtime)18}19import (20func main() {21    b := rod.New().Connect()22    runtime, err := page.GetRuntime()23    if err != nil {24        fmt.Println(err)25    }26    fmt.Println(runtime)27}28import (29func main() {30    b := rod.New().Connect()31    runtime, err := page.GetRuntime()32    if err != nil {33        fmt.Println(err)34    }35    fmt.Println(runtime)36}37import (38func main() {39    b := rod.New().Connect()40    runtime, err := page.GetRuntime()41    if err != nil {42        fmt.Println(err)43    }44    fmt.Println(runtime)45}46import (47func main() {48    b := rod.New().Connect()

getJSCtxID

Using AI Code Generation

1import (2func main() {3	browser := rod.New().MustConnect()4	page := browser.MustPage("")5	jsCtxID := page.MustGetJSCtxID()6	fmt.Println(jsCtxID)7}

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