[Live Now] Join the 1-day Testing & QA Summit featuring 15+ Expert Speakers.Join for FREE! 
How to use ByPromise method of rod Package
Best Rod code snippet using rod.ByPromise
page_eval.go
Source:page_eval.go 
...90func (e *EvalOptions) ByUser() *EvalOptions {91 e.UserGesture = true92 return e93}94// ByPromise enables AwaitPromise.95func (e *EvalOptions) ByPromise() *EvalOptions {96 e.AwaitPromise = true97 return e98}99func (e *EvalOptions) formatToJSFunc() string {100 js := strings.TrimSpace(e.JS)101 if detectJSFunction(js) {102 return fmt.Sprintf(`function() { return (%s).apply(this, arguments) }`, js)103 }104 return fmt.Sprintf(`function() { return %s }`, js)105}106// Eval is just a shortcut for Page.Evaluate with AwaitPromise set true.107func (p *Page) Eval(js string, jsArgs ...interface{}) (*proto.RuntimeRemoteObject, error) {108 return p.Evaluate(Eval(js, jsArgs...).ByPromise())109}110// Evaluate js on the page.111func (p *Page) Evaluate(opts *EvalOptions) (res *proto.RuntimeRemoteObject, err error) {112 var backoff utils.Sleeper113 // js context will be invalid if a frame is reloaded or not ready, then the isNilContextErr114 // will be true, then we retry the eval again.115 for {116 res, err = p.evaluate(opts)117 if err != nil && errors.Is(err, cdp.ErrCtxNotFound) {118 if opts.ThisObj != nil {119 return nil, &ErrObjectNotFound{opts.ThisObj}120 }121 if backoff == nil {122 backoff = utils.BackoffSleeper(30*time.Millisecond, 3*time.Second, nil)...
dev_helpers.go
Source:dev_helpers.go
...99 top,100 width,101 height,102 msg,103 ).ByPromise())104 remove = func() {105 _, _ = p.root.Evaluate(evalHelper(js.RemoveOverlay, id))106 }107 return108}109func (p *Page) tryTrace(typ TraceType, msg ...interface{}) func() {110 if !p.browser.trace {111 return func() {}112 }113 msg = append([]interface{}{typ}, msg...)114 msg = append(msg, p)115 p.browser.logger.Println(msg...)116 return p.Overlay(0, 0, 500, 0, fmt.Sprint(msg))117}118func (p *Page) tryTraceQuery(opts *EvalOptions) func() {119 if !p.browser.trace {120 return func() {}121 }122 p.browser.logger.Println(TraceTypeQuery, opts, p)123 msg := fmt.Sprintf("<code>%s</code>", html.EscapeString(opts.String()))124 return p.Overlay(0, 0, 500, 0, msg)125}126func (p *Page) tryTraceReq(includes, excludes []string) func(map[proto.NetworkRequestID]string) {127 if !p.browser.trace {128 return func(map[proto.NetworkRequestID]string) {}129 }130 msg := map[string][]string{131 "includes": includes,132 "excludes": excludes,133 }134 p.browser.logger.Println(TraceTypeWaitRequestsIdle, msg, p)135 cleanup := p.Overlay(0, 0, 500, 0, utils.MustToJSON(msg))136 ch := make(chan map[string]string)137 update := func(list map[proto.NetworkRequestID]string) {138 clone := map[string]string{}139 for k, v := range list {140 clone[string(k)] = v141 }142 ch <- clone143 }144 go func() {145 var waitlist map[string]string146 t := time.NewTicker(time.Second)147 for {148 select {149 case <-p.ctx.Done():150 t.Stop()151 cleanup()152 return153 case waitlist = <-ch:154 case <-t.C:155 p.browser.logger.Println(TraceTypeWaitRequests, p, waitlist)156 }157 }158 }()159 return update160}161// Overlay msg on the element162func (el *Element) Overlay(msg string) (removeOverlay func()) {163 id := utils.RandString(8)164 _, _ = el.Evaluate(evalHelper(js.ElementOverlay,165 id,166 msg,167 ).ByPromise())168 removeOverlay = func() {169 _, _ = el.Evaluate(evalHelper(js.RemoveOverlay, id))170 }171 return172}173func (el *Element) tryTrace(typ TraceType, msg ...interface{}) func() {174 if !el.page.browser.trace {175 return func() {}176 }177 msg = append([]interface{}{typ}, msg...)178 msg = append(msg, el)179 el.page.browser.logger.Println(msg...)180 return el.Overlay(fmt.Sprint(msg))181}182func (m *Mouse) initMouseTracer() {183 _, _ = m.page.Evaluate(evalHelper(js.InitMouseTracer, m.id, assets.MousePointer).ByPromise())184}185func (m *Mouse) updateMouseTracer() bool {186 res, err := m.page.Evaluate(evalHelper(js.UpdateMouseTracer, m.id, m.x, m.y))187 if err != nil {188 return true189 }190 return res.Value.Bool()191}192// Serve a port, if host is empty a random port will be used.193func serve(host string) (string, *http.ServeMux, func() error) {194 if host == "" {195 host = "127.0.0.1:0"196 }197 mux := http.NewServeMux()...
ByPromise
Using AI Code Generation
1import (2func main() {3 browser := rod.New().Connect()4 page := browser.Page("")5 page.WaitLoad()6 title := page.Eval(`document.title`).String()7 fmt.Println(title)8 url := page.Eval(`location.href`).String()9 fmt.Println(url)10 links := page.Eval(`document.querySelectorAll('a')`).Object()11 fmt.Println(links)12 linkText := page.Eval(`document.querySelector('a').innerText`).String()13 fmt.Println(linkText)14 linkHref := page.Eval(`document.querySelector('a').href`).String()15 fmt.Println(linkHref)16 linkInnerHTML := page.Eval(`document.querySelector('a').innerHTML`).String()17 fmt.Println(linkInnerHTML)18 linkOuterHTML := page.Eval(`document.querySelector('a').outerHTML`).String()19 fmt.Println(linkOuterHTML)20 cookies := page.Eval(`document.cookie`).String()21 fmt.Println(cookies)22 html := page.Eval(`document.documentElement.outerHTML`).String()23 fmt.Println(html)24 text := page.Eval(`document.documentElement.textContent`).String()25 fmt.Println(text)26 text2 := page.Eval(`
ByPromise
Using AI Code Generation
1import (2func main() {3 browser := rod.New().MustConnect()4 page.MustElement("input[name=q]").MustInput("rod")5 page.MustElement("input[name=q]").MustPress(proto.InputKeyEventEnter)6 page.MustScreenshot("2.png")7}8import (9func main() {10 browser := rod.New().MustConnect()11 page.MustElement("input[name=q]").MustInput("rod")12 page.MustElement("input[name=q]").MustPress(proto.InputKeyEventEnter)13 page.MustScreenshot("3.png")14}15import (16func main() {17 browser := rod.New().MustConnect()18 page.MustElement("input[name=q]").MustInput("rod")19 page.MustElement("input[name=q]").MustPress(proto.InputKeyEventEnter)20 page.MustScreenshot("4.png")21}22import (23func main() {24 browser := rod.New().MustConnect()25 page.MustElement("input[name=q]").MustInput("rod")26 page.MustElement("input[name=q]").MustPress(proto.InputKeyEventEnter)27 page.MustScreenshot("5.png")28}29import (30func main() {31 browser := rod.New().MustConnect()32 page.MustElement("input[name=q]").MustInput("rod")33 page.MustElement("input[name=q]").MustPress(proto.InputKeyEventEnter
ByPromise
Using AI Code Generation
1import (2func main() {3 Devtools(false)4 defer l.Cleanup()5 browser := rod.New().ControlURL(l.MustLaunch()).MustConnect()6 defer browser.MustClose()7 page.MustElement("input[name=q]").MustInput("rod").MustPress(rod.Enter)8 page.MustWaitLoad()9 fmt.Println(page.MustEval("document.title").String())10}11import (12func main() {13 Devtools(false)14 defer l.Cleanup()15 browser := rod.New().ControlURL(l.MustLaunch()).MustConnect()16 defer browser.MustClose()17 page.MustElement("input[name=q]").MustInput("rod").MustPress(rod.Enter)18 page.MustWaitLoad()19 fmt.Println(page.MustEval("document.title").String())20}21import (22func main() {23 Devtools(false)24 defer l.Cleanup()25 browser := rod.New().ControlURL(l.MustLaunch()).MustConnect()26 defer browser.MustClose()27 page.MustElement("input[name=q]").MustInput("rod").MustPress(rod.Enter)28 page.MustWaitLoad()29 fmt.Println(page.MustEval("document.title").String())30}31import (32func main() {33 Devtools(false)34 defer l.Cleanup()35 browser := rod.New().ControlURL(l.MustLaunch()).MustConnect()
ByPromise
Using AI Code Generation
1import (2func main() {3 browser := rod.New().Connect()4 page := browser.Page("")5 page.Element("input[name='q']").Input("rod")6 page.Keyboard.Press("Enter")7 page.WaitLoad()8 page.Element("div.g").ByPromise().Eval(`this.textContent`).String()9}10import (11func main() {12 browser := rod.New().Connect()13 page := browser.Page("")14 page.Element("input[name='q']").Input("rod")15 page.Keyboard.Press("Enter")16 page.WaitLoad()17 page.Element("div.g").ByEval(`this.textContent`).String()18}19import (20func main() {21 browser := rod.New().Connect()22 page := browser.Page("")23 page.Element("input[name='q']").Input("rod")24 page.Keyboard.Press("Enter")25 page.WaitLoad()26 page.Element("div.g").ByJS().String()27}28import (29func main() {30 browser := rod.New().Connect()31 page := browser.Page("")32 page.Element("input[name='q']").Input("rod")33 page.Keyboard.Press("Enter")34 page.WaitLoad()35 page.Element("div.g").ByJSHandle().String()36}37import (38func main() {39 browser := rod.New().Connect()40 page := browser.Page("")41 page.Element("input[name='q']").Input("rod")
ByPromise
Using AI Code Generation
1import (2func main() {3 browser := rod.New().Connect()4 page.WaitLoad()5 page.Element("#lst-ib").Input("rod").Press("enter")6 page.WaitLoad()7 el := page.MustElement("h3 a")8 fmt.Println(el.MustProperty("href"))9 fmt.Println(el.MustText())10 utils.Sleep(5)11 browser.Close()12}
ByPromise
Using AI Code Generation
1import (2func main() {3 browser := rod.New().MustConnect()4 page.MustWaitLoad()5 page.MustElement("#lst-ib").MustInput("Hello World")6 page.MustElement("#tsf > div.tsf-p > div.jsb > center > input[type=\"submit\"]:nth-child(1)").MustClick()7 page.MustWaitLoad()8 fmt.Println(page.MustTitle())9 browser.MustClose()10}11import (12func main() {13 browser := rod.New().MustConnect()14 page.MustWaitLoad()15 page.MustElement("#lst-ib").MustInput("Hello World")16 page.MustElement("#tsf > div.tsf-p > div.jsb > center > input[type=\"submit\"]:nth-child(1)").MustClick()17 page.MustWaitLoad()18 fmt.Println(page.MustTitle())19 browser.MustClose()20}21import (22func main() {23 browser := rod.New().MustConnect()24 page.MustWaitLoad()
ByPromise
Using AI Code Generation
1import (2func main() {3 browser := rod.New().MustConnect()4 data := page.MustEvaluate(`() => {5 }`).Object()6 name := data.MustGet("0").Get("name").String()7 println(name)8 browser.MustClose()9}10import (11func main() {12 browser := rod.New().MustConnect()13 data := page.MustEvaluate(`() => {14 }`).Object()15 name := data.MustGet("0").Get("name").String()16 println(name)17 browser.MustClose()18}19import (20func main() {21 browser := rod.New().MustConnect()22 data := page.MustEvaluate(`() => {23 }`).Object()24 name := data.MustGet("0").Get("name").String()25 println(name)26 browser.MustClose()27}28import (
ByPromise
Using AI Code Generation
1import (2func main() {3 flag.Parse()4 url := flag.Arg(0)5 page := rod.New().MustConnect().MustPage(url)6 title := page.MustTitle()7 fmt.Println(title)8}9import (10func main() {11 flag.Parse()12 url := flag.Arg(0)13 page := rod.New().MustConnect().MustPage(url)14 title := page.MustEval(`document.title`).String()15 fmt.Println(title)16}17import (18func main() {19 flag.Parse()20 url := flag.Arg(0)21 page := rod.New().MustConnect().MustPage(url)22 title := page.MustEval(`document.title`).String()23 fmt.Println(title)24}25import (26func main() {27 flag.Parse()28 url := flag.Arg(0)29 page := rod.New().MustConnect().MustPage(url)30 title := page.MustWaitLoad().MustTitle()31 fmt.Println(title)32}33import (34func main() {35 flag.Parse()36 url := flag.Arg(0)37 page := rod.New().MustConnect().MustPage(url)
ByPromise
Using AI Code Generation
1import (2func main() {3 browser := rod.NewBrowser()4 page := browser.NewPage()5 page.WaitLoad()6 page.Screenshot(os.Stdout)7}8import (9func main() {10 browser := rod.NewBrowser()11 page := browser.NewPage()12 page.WaitLoad()13 page.Screenshot(os.Stdout)14}15import (16func main() {17 browser := rod.NewBrowser()18 page := browser.NewPage()19 page.WaitLoad()20 page.Screenshot(os.Stdout)21}22import (23func main() {24 browser := rod.NewBrowser()25 page := browser.NewPage()26 page.WaitLoad()27 page.Screenshot(os.Stdout)28}
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.
LambdaTest Learning Hubs:
- JUnit Tutorial
- TestNG Tutorial
- Webdriver Tutorial
- WebDriverIO Tutorial
- Protractor Tutorial
- Selenium 4 Tutorial
- Jenkins Tutorial
- NUnit Tutorial
- Jest Tutorial
- Playwright Tutorial
- Cypress Tutorial
- PyTest Tutorial
YouTube
You could also refer to video tutorials over LambdaTest YouTube channel to get step by step demonstration from industry experts.
Run Rod automation tests on LambdaTest cloud grid
Perform automation testing on 3000+ real desktop and mobile devices online.
Most used method in
- new
- Incognito
- ControlURL
- SlowMotion
- Trace
- Monitor
- Logger
- Client
- DefaultDevice
- NoDefaultDevice
- Connect
- Close
- Page
- Pages
- Call
- PageFromSession
- PageFromTarget
- EachEvent
- WaitEvent
- Event
- initEvents
- pageInfo
- IgnoreCertErrors
- GetCookies
- SetCookies
- WaitDownload
- Version
- Context
- GetContext
- Timeout
- CancelTimeout
- WithCancel
- Sleeper
- String
- ServeMonitor
- trySlowmotion
- ExposeHelpers
- Overlay
- tryTrace
- tryTraceQuery
- tryTraceReq
- initMouseTracer
- updateMouseTracer
- serve
- GetSessionID
- Focus
- ScrollIntoView
- Hover
- MoveMouseOut
- Click
- Tap
- Interactable
- Shape
- Type
- KeyActions
- SelectText
- SelectAllText
- Input
- InputTime
- Blur
- Select
- Matches
- Attribute
- Property
- SetFiles
- Describe
- ShadowRoot
- Frame
- ContainsElement
- Text
- HTML
- Visible
- WaitLoad
- WaitStable
- WaitStableRAF
- WaitInteractable
- Wait
- WaitVisible
- WaitEnabled
- WaitWritable
- WaitInvisible
- CanvasToImage
- Resource
- BackgroundImage
- Screenshot
- Release
- Remove
- Eval
- evaluate
- Equal
- id
- GetXPath
- Error
- Is
- Unwrap
- NotFoundSleeper
- HijackRequests
- newHijackRouter
- Add
- Run
- Stop
- ContinueRequest
- LoadResponse
- Method
- URL
- Header
- Headers
- Body
- JSONBody
- Req
- SetContext
- SetBody
- IsNavigation
- Payload
- SetHeader
- Fail
- HandleAuth
- newKeyboard
- getModifiers
- modifiers
- Press
- Do
- balance
- InsertText
- newMouse
- Move
- Scroll
- Down
- Up
- newTouch
- Start
- End
- Cancel
- genE
- WithPanic
- MustConnect
- MustClose
- MustIncognito
- MustPage
- MustPages
- MustPageFromTargetID
- MustHandleAuth
- MustIgnoreCertErrors
- MustGetCookies
- MustSetCookies
- MustWaitDownload
- MustVersion
- MustFind
- MustFindByURL
- MustInfo
- MustHTML
- MustCookies
- MustSetExtraHeaders
- MustSetUserAgent
- MustNavigate
- MustReload
- MustActivate
- MustNavigateBack
- MustNavigateForward
- MustGetWindow
- MustSetWindow
- MustWindowMinimize
- MustWindowMaximize
- MustWindowFullscreen
- MustWindowNormal
- MustSetViewport
- MustEmulate
- MustStopLoading
- MustHandleDialog
- MustHandleFileDialog
- MustScreenshot
- MustScreenshotFullPage
- MustPDF
- MustWaitOpen
- MustWaitNavigation
- MustWaitRequestIdle
- MustWaitIdle
- MustWaitLoad
- MustAddScriptTag
- MustAddStyleTag
- MustEvalOnNewDocument
- MustExpose
- MustEval
- MustEvaluate
- MustWait
- MustWaitElementsMoreThan
- MustObjectToJSON
- MustObjectsToJSON
- MustElementFromNode
- MustElementFromPoint
- MustRelease
- MustHas
- MustHasX
- MustHasR
- MustSearch
- MustElement
- MustElementR
- MustElementX
- MustElementByJS
- MustElements
- MustElementsX
- MustElementsByJS
- MustHandle
- MustDo
- MustMove
- MustScroll
- MustDown
- MustUp
- MustClick
- MustType
- MustInsertText
- MustStart
- MustEnd
- MustCancel
- MustTap
- MustDescribe
- MustShadowRoot
- MustFrame
- MustFocus
- MustScrollIntoView
- MustHover
- MustDoubleClick
- MustInteractable
- MustWaitInteractable
- MustKeyActions
- MustSelectText
- MustSelectAllText
- MustInput
- MustInputTime
- MustBlur
- MustSelect
- MustMatches
- MustAttribute
- MustProperty
- MustContainsElement
- MustSetFiles
- MustSetDocumentContent
- MustText
- MustVisible
- MustWaitStable
- MustWaitVisible
- MustWaitInvisible
- MustWaitEnabled
- MustWaitWritable
- MustShape
- MustCanvasToImage
- MustResource
- MustBackgroundImage
- MustRemove
- MustParent
- MustParents
- MustNext
- MustPrevious
- MustAdd
- MustStop
- MustLoadResponse
- MustEqual
- MustMoveMouseOut
- MustGetXPath
- IsIframe
- Browser
- Info
- Cookies
- SetExtraHeaders
- SetUserAgent
- Navigate
- NavigateBack
- NavigateForward
- Reload
- Activate
- getWindowID
- GetWindow
- SetWindow
- SetViewport
- SetDocumentContent
- Emulate
- StopLoading
- HandleDialog
- HandleFileDialog
- GetResource
- WaitOpen
- WaitNavigation
- WaitRequestIdle
- WaitIdle
- WaitRepaint
- AddScriptTag
- AddStyleTag
- EvalOnNewDocument
- WaitElementsMoreThan
- ObjectToJSON
- ElementFromObject
- ElementFromNode
- ElementFromPoint
- evalHelper
- This
- ByObject
- ByUser
- ByPromise
- formatToJSFunc
- Expose
- formatArgs
- ensureJSHelper
- getHelper
- setHelper
- getJSCtxID
- unsetJSCtxID
- jsCtxIDByObjectID
- First
- Last
- Empty
- Find
- FindByURL
- Has
- HasX
- HasR
- Element
- ElementR
- ElementX
- ElementByJS
- Elements
- ElementsX
- ElementsByJS
- Search
- Get
- All
- Race
- ElementFunc
- Handle
- Parent
- Parents
- Next
- Previous
- key
- set
- LoadState
- RemoveState
- EnableDomain
- DisableDomain
- cachePage
- loadCachedPage
- cleanupStates
- Load
- NewPagePool
- Put
- Cleanup
- NewBrowserPool
- NewStreamReader
- Read
- Try
- genRegMatcher
- saveFile
- httHTML
- mustToJSONForDev
- parseDataURI
Try LambdaTest Now !!
Get 100 minutes of automation test minutes FREE!!
Was this article helpful?
