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How to use WaitForFunctionAsync method of PuppeteerSharp.Frame class

Best Puppeteer-sharp code snippet using PuppeteerSharp.Frame.WaitForFunctionAsync

Frame.cs

Source:Frame.cs

...304        /// <param name="script">Function to be evaluated in browser context</param>305        /// <param name="options">Optional waiting parameters</param>306        /// <param name="args">Arguments to pass to <c>script</c></param>307        /// <returns>A task that resolves when the <c>script</c> returns a truthy value</returns>308        /// <seealso cref="Page.WaitForFunctionAsync(string, WaitForFunctionOptions, object[])"/>309        /// <exception cref="WaitTaskTimeoutException">If timeout occurred.</exception>310        public Task<JSHandle> WaitForFunctionAsync(string script, WaitForFunctionOptions options, params object[] args)311           => MainWorld.WaitForFunctionAsync(script, options, args);312        /// <summary>313        /// Waits for an expression to be evaluated to a truthy value314        /// </summary>315        /// <param name="script">Expression to be evaluated in browser context</param>316        /// <param name="options">Optional waiting parameters</param>317        /// <returns>A task that resolves when the <c>script</c> returns a truthy value</returns>318        /// <seealso cref="Page.WaitForExpressionAsync(string, WaitForFunctionOptions)"/>319        /// <exception cref="WaitTaskTimeoutException">If timeout occurred.</exception>320        public Task<JSHandle> WaitForExpressionAsync(string script, WaitForFunctionOptions options)321            => MainWorld.WaitForExpressionAsync(script, options);322        /// <summary>323        /// Adds a <c><![CDATA[<link rel="stylesheet">]]></c> tag into the page with the desired url or a <c><![CDATA[<link rel="stylesheet">]]></c> tag with the content324        /// </summary>325        /// <param name="options">add style tag options</param>...

DOMWorld.cs

Source:DOMWorld.cs

...226        internal Task<ElementHandle> WaitForSelectorAsync(string selector, WaitForSelectorOptions options = null)227            => WaitForSelectorOrXPathAsync(selector, false, options);228        internal Task<ElementHandle> WaitForXPathAsync(string xpath, WaitForSelectorOptions options = null)229            => WaitForSelectorOrXPathAsync(xpath, true, options);230        internal Task<JSHandle> WaitForFunctionAsync(string script, WaitForFunctionOptions options, params object[] args)231            => new WaitTask(232                this,233                script,234                false,235                "function",236                options.Polling,237                options.PollingInterval,238                options.Timeout ?? _timeoutSettings.Timeout,239                args).Task;240        internal Task<JSHandle> WaitForExpressionAsync(string script, WaitForFunctionOptions options)241            => new WaitTask(242                this,243                script,244                true,...

InputTests.cs

Source:InputTests.cs

...173                PollingInterval = 50,174                Timeout = 1000175            };176            Task WaitForScrollPointAsync(DomPointInternal point)177                => Page.WaitForFunctionAsync(178                    @"(x, y) => document.body.scrollLeft === x && document.body.scrollTop === y",179                    waitForFunctionOptions,180                    point.X,181                    point.Y);182            await Page.GoToAsync(183                $@"{TestConstants.ServerUrl}/longText.html",184                WaitUntilNavigation.Networkidle0);185            var expectedWheelEvents = new[]186            {187                new WheelEventInternal(0, 500),188                new WheelEventInternal(0, -200),189                new WheelEventInternal(300, 0),190                new WheelEventInternal(-150, 0)191            };...

FrameWaitForFunctionTests.cs

Source:FrameWaitForFunctionTests.cs

...16        [PuppeteerFact]17        public async Task ShouldWorkWhenResolvedRightBeforeExecutionContextDisposal()18        {19            await Page.EvaluateFunctionOnNewDocumentAsync("() => window.__RELOADED = true");20            await Page.WaitForFunctionAsync(@"() =>21            {22                if (!window.__RELOADED)23                    window.location.reload();24                return true;25            }");26        }27        [PuppeteerTest("waittask.spec.ts", "Frame.waitForFunction", "should poll on interval")]28        [PuppeteerFact]29        public async Task ShouldPollOnInterval()30        {31            var success = false;32            var startTime = DateTime.Now;33            var polling = 100;34            var watchdog = Page.WaitForFunctionAsync("() => window.__FOO === 'hit'", new WaitForFunctionOptions { PollingInterval = polling })35                .ContinueWith(_ => success = true);36            await Page.EvaluateExpressionAsync("window.__FOO = 'hit'");37            Assert.False(success);38            await Page.EvaluateExpressionAsync("document.body.appendChild(document.createElement('div'))");39            await watchdog;40            Assert.True((DateTime.Now - startTime).TotalMilliseconds > polling / 2);41        }42        43        [PuppeteerTest("waittask.spec.ts", "Frame.waitForFunction", "should poll on interval async")]44        [PuppeteerFact]45        public async Task ShouldPollOnIntervalAsync()46        {47            var success = false;48            var startTime = DateTime.Now;49            var polling = 100;50            var watchdog = Page.WaitForFunctionAsync("async () => window.__FOO === 'hit'", new WaitForFunctionOptions { PollingInterval = polling })51                .ContinueWith(_ => success = true);52            await Page.EvaluateFunctionAsync("async () => window.__FOO = 'hit'");53            Assert.False(success);54            await Page.EvaluateExpressionAsync("document.body.appendChild(document.createElement('div'))");55            await watchdog;56            Assert.True((DateTime.Now - startTime).TotalMilliseconds > polling / 2);57        }58        [PuppeteerTest("waittask.spec.ts", "Frame.waitForFunction", "should poll on mutation")]59        [PuppeteerFact]60        public async Task ShouldPollOnMutation()61        {62            var success = false;63            var watchdog = Page.WaitForFunctionAsync("() => window.__FOO === 'hit'",64                new WaitForFunctionOptions { Polling = WaitForFunctionPollingOption.Mutation })65                .ContinueWith(_ => success = true);66            await Page.EvaluateExpressionAsync("window.__FOO = 'hit'");67            Assert.False(success);68            await Page.EvaluateExpressionAsync("document.body.appendChild(document.createElement('div'))");69            await watchdog;70        }71        [PuppeteerTest("waittask.spec.ts", "Frame.waitForFunction", "should poll on mutation async")]72        [PuppeteerFact]73        public async Task ShouldPollOnMutationAsync()74        {75            var success = false;76            var watchdog = Page.WaitForFunctionAsync("async () => window.__FOO === 'hit'",77                new WaitForFunctionOptions { Polling = WaitForFunctionPollingOption.Mutation })78                .ContinueWith(_ => success = true);79            await Page.EvaluateFunctionAsync("async () => window.__FOO = 'hit'");80            Assert.False(success);81            await Page.EvaluateExpressionAsync("document.body.appendChild(document.createElement('div'))");82            await watchdog;83        }84        [PuppeteerTest("waittask.spec.ts", "Frame.waitForFunction", "should poll on raf")]85        [PuppeteerFact]86        public async Task ShouldPollOnRaf()87        {88            var watchdog = Page.WaitForFunctionAsync("() => window.__FOO === 'hit'",89                new WaitForFunctionOptions { Polling = WaitForFunctionPollingOption.Raf });90            await Page.EvaluateExpressionAsync("window.__FOO = 'hit'");91            await watchdog;92        }93        [PuppeteerTest("waittask.spec.ts", "Frame.waitForFunction", "should poll on raf async")]94        [PuppeteerFact]95        public async Task ShouldPollOnRafAsync()96        {97            var watchdog = Page.WaitForFunctionAsync("async () => window.__FOO === 'hit'",98                new WaitForFunctionOptions { Polling = WaitForFunctionPollingOption.Raf });99            await Page.EvaluateFunctionAsync("async () => (globalThis.__FOO = 'hit')");100            await watchdog;101        }102        [PuppeteerTest("waittask.spec.ts", "Frame.waitForFunction", "should work with strict CSP policy")]103        [SkipBrowserFact(skipFirefox: true)]104        public async Task ShouldWorkWithStrictCSPPolicy()105        {106            Server.SetCSP("/empty.html", "script-src " + TestConstants.ServerUrl);107            await Page.GoToAsync(TestConstants.EmptyPage);108            await Task.WhenAll(109                Page.WaitForFunctionAsync("() => window.__FOO === 'hit'", new WaitForFunctionOptions110                {111                    Polling = WaitForFunctionPollingOption.Raf112                }),113                Page.EvaluateExpressionAsync("window.__FOO = 'hit'"));114        }115        [PuppeteerTest("waittask.spec.ts", "Frame.waitForFunction", "should throw negative polling interval")]116        [PuppeteerFact]117        public async Task ShouldThrowNegativePollingInterval()118        {119            var exception = await Assert.ThrowsAsync<ArgumentOutOfRangeException>(()120                => Page.WaitForFunctionAsync("() => !!document.body", new WaitForFunctionOptions { PollingInterval = -10 }));121            Assert.Contains("Cannot poll with non-positive interval", exception.Message);122        }123        [PuppeteerTest("waittask.spec.ts", "Frame.waitForFunction", "should return the success value as a JSHandle")]124        [PuppeteerFact]125        public async Task ShouldReturnTheSuccessValueAsAJSHandle()126            => Assert.Equal(5, await (await Page.WaitForFunctionAsync("() => 5")).JsonValueAsync<int>());127        [PuppeteerTest("waittask.spec.ts", "Frame.waitForFunction", "should return the window as a success value")]128        [PuppeteerFact]129        public async Task ShouldReturnTheWindowAsASuccessValue()130            => Assert.NotNull(await Page.WaitForFunctionAsync("() => window"));131        [PuppeteerTest("waittask.spec.ts", "Frame.waitForFunction", "should accept ElementHandle arguments")]132        [PuppeteerFact]133        public async Task ShouldAcceptElementHandleArguments()134        {135            await Page.SetContentAsync("<div></div>");136            var div = await Page.QuerySelectorAsync("div");137            var resolved = false;138            var waitForFunction = Page.WaitForFunctionAsync("element => !element.parentElement", div)139                .ContinueWith(_ => resolved = true);140            Assert.False(resolved);141            await Page.EvaluateFunctionAsync("element => element.remove()", div);142            await waitForFunction;143        }144        [PuppeteerTest("waittask.spec.ts", "Frame.waitForFunction", "should respect timeout")]145        [PuppeteerFact]146        public async Task ShouldRespectTimeout()147        {148            var exception = await Assert.ThrowsAsync<WaitTaskTimeoutException>(()149                => Page.WaitForExpressionAsync("false", new WaitForFunctionOptions { Timeout = 10 }));150            Assert.Contains("waiting for function failed: timeout", exception.Message);151        }152        [PuppeteerTest("waittask.spec.ts", "Frame.waitForFunction", "should respect default timeout")]153        [PuppeteerFact]154        public async Task ShouldRespectDefaultTimeout()155        {156            Page.DefaultTimeout = 1;157            var exception = await Assert.ThrowsAsync<WaitTaskTimeoutException>(()158                => Page.WaitForExpressionAsync("false"));159            Assert.Contains("waiting for function failed: timeout", exception.Message);160        }161        [PuppeteerTest("waittask.spec.ts", "Frame.waitForFunction", "should disable timeout when its set to 0")]162        [PuppeteerFact]163        public async Task ShouldDisableTimeoutWhenItsSetTo0()164        {165            var watchdog = Page.WaitForFunctionAsync(@"() => {166                window.__counter = (window.__counter || 0) + 1;167                return window.__injected;168            }", new WaitForFunctionOptions { Timeout = 0, PollingInterval = 10 });169            await Page.WaitForFunctionAsync("() => window.__counter > 10");170            await Page.EvaluateExpressionAsync("window.__injected = true");171            await watchdog;172        }173        [PuppeteerTest("waittask.spec.ts", "Frame.waitForFunction", "should survive cross-process navigation")]174        [PuppeteerFact]175        public async Task ShouldSurviveCrossProcessNavigation()176        {177            var fooFound = false;178            var waitForFunction = Page.WaitForExpressionAsync("window.__FOO === 1")179                .ContinueWith(_ => fooFound = true);180            await Page.GoToAsync(TestConstants.EmptyPage);181            Assert.False(fooFound);182            await Page.ReloadAsync();183            Assert.False(fooFound);184            await Page.GoToAsync(TestConstants.CrossProcessUrl + "/grid.html");185            Assert.False(fooFound);186            await Page.EvaluateExpressionAsync("window.__FOO = 1");187            await waitForFunction;188            Assert.True(fooFound);189        }190        [PuppeteerTest("waittask.spec.ts", "Frame.waitForFunction", "should survive navigations")]191        [PuppeteerFact]192        public async Task ShouldSurviveNavigations()193        {194            var watchdog = Page.WaitForFunctionAsync("() => window.__done");195            await Page.GoToAsync(TestConstants.EmptyPage);196            await Page.GoToAsync(TestConstants.ServerUrl + "/consolelog.html");197            await Page.EvaluateFunctionAsync("() => window.__done = true");198            await watchdog;199        }200    }201}...

BlazorTest.cs

Source:BlazorTest.cs

...175      await page.ClickAsync("h1 > strong > a");176      await page.WaitForNavigationAsync(new NavigationOptions { Timeout = timeout });177178      await page.WaitForExpressionAsync("1 + 1 === 2", new WaitForFunctionOptions { Timeout = timeout });179      await page.WaitForFunctionAsync("() => window.location.href === 'https://github.com/kblok/puppeteer-sharp'", new WaitForFunctionOptions { Timeout = timeout });180      await page.WaitForSelectorAsync("#readme", new WaitForSelectorOptions { Timeout = timeout });181      await page.WaitForXPathAsync("//*[@id='readme']", new WaitForSelectorOptions { Timeout = timeout });182183      await page.WaitForTimeoutAsync(timeout);184185      // WaitUntilNavigation186      new NavigationOptions().WaitUntil = new []187      {188        WaitUntilNavigation.Load,189        WaitUntilNavigation.DOMContentLoaded,190        WaitUntilNavigation.Networkidle0,191        WaitUntilNavigation.Networkidle2192      };193194      // Frame195      var frame = page.MainFrame;196197      await frame.WaitForExpressionAsync("1 + 1 === 2", new WaitForFunctionOptions { Timeout = timeout });198      await frame.WaitForFunctionAsync("() => window.location.href === 'https://github.com/kblok/puppeteer-sharp'", new WaitForFunctionOptions { Timeout = timeout });199      await frame.WaitForSelectorAsync("#readme", new WaitForSelectorOptions { Timeout = timeout });200      await frame.WaitForXPathAsync("//*[@id='readme']", new WaitForSelectorOptions { Timeout = timeout });201202      await frame.WaitForTimeoutAsync(timeout);203    }204205    [Fact]206    public async Task values_from_Page()207    {208      var page = await Page();209210      var url = page.Url;211      var title = await page.GetTitleAsync();212      var content = await page.GetContentAsync();
...

Examples.cs

Source:Examples.cs

...67            await Task.WhenAll(requestTask, responseTask);68            await _page.ClickAsync("h1 > strong > a");69            await _page.WaitForNavigationAsync(new NavigationOptions { Timeout = timeout });70            await _page.WaitForExpressionAsync("1 + 1 === 2", new WaitForFunctionOptions { Timeout = timeout });71            await _page.WaitForFunctionAsync("() => window.location.href === 'https://github.com/hardkoded/puppeteer-sharp'", new WaitForFunctionOptions { Timeout = timeout });72            await _page.WaitForSelectorAsync("#readme", new WaitForSelectorOptions { Timeout = timeout });73            await _page.WaitForXPathAsync("//*[@id='readme']", new WaitForSelectorOptions { Timeout = timeout });74            await _page.WaitForTimeoutAsync(timeout);75            // WaitUntilNavigation76            new NavigationOptions().WaitUntil = new[]77            {78                WaitUntilNavigation.Load,79                WaitUntilNavigation.DOMContentLoaded,80                WaitUntilNavigation.Networkidle0,81                WaitUntilNavigation.Networkidle282            };83            // Frame84            var frame = _page.MainFrame;85            await frame.WaitForExpressionAsync("1 + 1 === 2", new WaitForFunctionOptions { Timeout = timeout });86            await frame.WaitForFunctionAsync("() => window.location.href === 'https://github.com/hardkoded/puppeteer-sharp'", new WaitForFunctionOptions { Timeout = timeout });87            await frame.WaitForSelectorAsync("#readme", new WaitForSelectorOptions { Timeout = timeout });88            await frame.WaitForXPathAsync("//*[@id='readme']", new WaitForSelectorOptions { Timeout = timeout });89            await frame.WaitForTimeoutAsync(timeout);90        }91        [Fact]92        public async Task values_from_Page()93        {94            var url = _page.Url;95            var title = await _page.GetTitleAsync();96            var content = await _page.GetContentAsync();97            var cookies = await _page.GetCookiesAsync();98        }99        [Fact]100        public async Task form()...

WaitForFunctionTests.cs

Source:WaitForFunctionTests.cs

...15        {16            var success = false;17            var startTime = DateTime.Now;18            var polling = 100;19            var watchdog = Page.WaitForFunctionAsync("() => window.__FOO === 'hit'", new WaitForFunctionOptions { PollingInterval = polling })20                .ContinueWith(_ => success = true);21            await Page.EvaluateExpressionAsync("window.__FOO = 'hit'");22            Assert.False(success);23            await Page.EvaluateExpressionAsync("document.body.appendChild(document.createElement('div'))");24            await watchdog;25            Assert.True((DateTime.Now - startTime).TotalMilliseconds > polling / 2);26        }27        [Fact]28        public async Task ShouldPollOnMutation()29        {30            var success = false;31            var watchdog = Page.WaitForFunctionAsync("() => window.__FOO === 'hit'",32                new WaitForFunctionOptions { Polling = WaitForFunctionPollingOption.Mutation })33                .ContinueWith(_ => success = true);34            await Page.EvaluateExpressionAsync("window.__FOO = 'hit'");35            Assert.False(success);36            await Page.EvaluateExpressionAsync("document.body.appendChild(document.createElement('div'))");37            await watchdog;38        }39        [Fact]40        public async Task ShouldPollOnRaf()41        {42            var watchdog = Page.WaitForFunctionAsync("() => window.__FOO === 'hit'",43                new WaitForFunctionOptions { Polling = WaitForFunctionPollingOption.Raf });44            await Page.EvaluateExpressionAsync("window.__FOO = 'hit'");45            await watchdog;46        }47        [Fact]48        public async Task ShouldThrowNegativePollingInterval()49        {50            var exception = await Assert.ThrowsAsync<ArgumentOutOfRangeException>(()51                => Page.WaitForFunctionAsync("() => !!document.body", new WaitForFunctionOptions { PollingInterval = -10 }));52            Assert.Contains("Cannot poll with non-positive interval", exception.Message);53        }54        [Fact]55        public async Task ShouldReturnTheSuccessValueAsAJSHandle()56        {57            Assert.Equal(5, await (await Page.WaitForFunctionAsync("() => 5")).JsonValueAsync<int>());58        }59        [Fact]60        public async Task ShouldReturnTheWindowAsASuccessValue()61        {62            Assert.NotNull(await Page.WaitForFunctionAsync("() => window"));63        }64        [Fact]65        public async Task ShouldAcceptElementHandleArguments()66        {67            await Page.SetContentAsync("<div></div>");68            var div = await Page.QuerySelectorAsync("div");69            var resolved = false;70            var waitForFunction = Page.WaitForFunctionAsync("element => !element.parentElement", div)71                .ContinueWith(_ => resolved = true);72            Assert.False(resolved);73            await Page.EvaluateFunctionAsync("element => element.remove()", div);74            await waitForFunction;75        }76    }77}...

WaitForFunctionOptions.cs

Source:WaitForFunctionOptions.cs

2{3    /// <summary>4    /// Optional waiting parameters.5    /// </summary>6    /// <seealso cref="Page.WaitForFunctionAsync(string, WaitForFunctionOptions, object[])"/>7    /// <seealso cref="Frame.WaitForFunctionAsync(string, WaitForFunctionOptions, object[])"/>8    /// <seealso cref="WaitForSelectorOptions"/>9    public class WaitForFunctionOptions10    {11        /// <summary>12        /// Maximum time to wait for in milliseconds. Defaults to 30000 (30 seconds). Pass 0 to disable timeout.13        /// </summary>14        public int Timeout { get; set; } = 30_000;15        /// <summary>16        /// An interval at which the <c>pageFunction</c> is executed. defaults to <see cref="WaitForFunctionPollingOption.Raf"/>17        /// </summary>18        public WaitForFunctionPollingOption Polling { get; set; } = WaitForFunctionPollingOption.Raf;19        /// <summary>20        /// An interval at which the <c>pageFunction</c> is executed. If no value is specified will use <see cref="Polling"/>21        /// </summary>...

WaitForFunctionAsync

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using PuppeteerSharp;4{5    {6        static async Task Main(string[] args)7        {8            var browser = await Puppeteer.LaunchAsync(new LaunchOptions9            {10                Args = new string[] { "--start-maximized" }11            });12            var page = await browser.NewPageAsync();13            await page.WaitForFunctionAsync("document.body.innerText.includes('Google')");14            await page.ScreenshotAsync("screenshot.png");15            await browser.CloseAsync();16        }17    }18}19using System;20using System.Threading.Tasks;21using PuppeteerSharp;22{23    {24        static async Task Main(string[] args)25        {26            var browser = await Puppeteer.LaunchAsync(new LaunchOptions27            {28                Args = new string[] { "--start-maximized" }29            });30            var page = await browser.NewPageAsync();31            await page.WaitForFunctionAsync("document.body.innerText.includes('Google')");32            await page.ScreenshotAsync("screenshot.png");33            await browser.CloseAsync();34        }35    }36}37using System;38using System.Threading.Tasks;39using PuppeteerSharp;40{41    {42        static async Task Main(string[] args)43        {44            var browser = await Puppeteer.LaunchAsync(new LaunchOptions45            {46                Args = new string[] { "--start-maximized" }47            });48            var page = await browser.NewPageAsync();49            await page.WaitForFunctionAsync("document.body.innerText.includes('Google')");50            await page.ScreenshotAsync("screenshot.png");51            await browser.CloseAsync();52        }53    }54}55using System;56using System.Threading.Tasks;

WaitForFunctionAsync

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using PuppeteerSharp;4{5    {6        static async Task Main(string[] args)7        {8            var options = new LaunchOptions { Headless = true };9            using (var browser = await Puppeteer.LaunchAsync(options))10            {11                using (var page = await browser.NewPageAsync())12                {13                    var elementHandle = await page.WaitForFunctionAsync(@"() => {14                        var element = document.querySelector('input[name=q]');15                        return element != null;16                    }");17                }18            }19        }20    }21}22var elementHandle = await page.WaitForFunctionAsync(@"() => {23    var element = document.querySelector('input[name=q]');24    return element != null;25}");26var elementHandle = await page.WaitForFunctionAsync(async () => {27    var element = await page.QuerySelectorAsync("input[name=q]");28    return element != null;29});30var elementHandle = await page.WaitForFunctionAsync(@"(selector) => {31    var element = document.querySelector(selector);32    return element != null;33}", "input[name=q]");34var elementHandle = await page.WaitForFunctionAsync(@"(selector) => {35    var element = document.querySelector(selector);36    return element != null;37}", new WaitForFunctionOptions {38}, "input[name=q]");

WaitForFunctionAsync

Using AI Code Generation

1var browser = await Puppeteer.LaunchAsync(new LaunchOptions2{3});4var page = await browser.NewPageAsync();5await page.WaitForFunctionAsync("document.querySelector('input[name=q]')");6await browser.CloseAsync();7var browser = await Puppeteer.LaunchAsync(new LaunchOptions8{9});10var page = await browser.NewPageAsync();11await page.WaitForFunctionAsync("() => document.querySelector('input[name=q]')");12await browser.CloseAsync();13var browser = await Puppeteer.LaunchAsync(new LaunchOptions14{15});16var page = await browser.NewPageAsync();17await page.WaitForFunctionAsync("() => document.querySelector('input[name=q]') != null");18await browser.CloseAsync();19var browser = await Puppeteer.LaunchAsync(new LaunchOptions20{21});22var page = await browser.NewPageAsync();23await page.WaitForFunctionAsync("() => document.querySelector('input[name=q]') != undefined");24await browser.CloseAsync();25var browser = await Puppeteer.LaunchAsync(new LaunchOptions26{27});28var page = await browser.NewPageAsync();29await page.WaitForFunctionAsync("() => document.querySelector('input[name=q]') != 0");30await browser.CloseAsync();

WaitForFunctionAsync

Using AI Code Generation

1var frame = await page.GetMainFrameAsync();2var url = await frame.WaitForFunctionAsync("() => document.location.href");3Console.WriteLine(url);4var url = await page.WaitForFunctionAsync("() => document.location.href");5Console.WriteLine(url);6var frame = await page.GetMainFrameAsync();7var url = await frame.WaitForFunctionAsync("() => document.location.href", new WaitForFunctionOptions { PollingInterval = 100 });8Console.WriteLine(url);9var url = await page.WaitForFunctionAsync("() => document.location.href", new WaitForFunctionOptions { PollingInterval = 100 });10Console.WriteLine(url);11var frame = await page.GetMainFrameAsync();12var url = await frame.WaitForFunctionAsync("() => document.location.href", new WaitForFunctionOptions { PollingInterval = 100, Timeout = 30000 });13Console.WriteLine(url);14var url = await page.WaitForFunctionAsync("() => document.location.href", new WaitForFunctionOptions { PollingInterval = 100, Timeout = 30000 });15Console.WriteLine(url);16var frame = await page.GetMainFrameAsync();17var url = await frame.WaitForFunctionAsync("() => document.location.href", new WaitForFunctionOptions { PollingInterval = 100, Timeout = 30000 });18Console.WriteLine(url);19var url = await page.WaitForFunctionAsync("() => document.location.href", new WaitForFunctionOptions { PollingInterval = 100, Timeout = 30000 });20Console.WriteLine(url);21var frame = await page.GetMainFrameAsync();22var url = await frame.WaitForFunctionAsync("() => document.location.href", new WaitForFunctionOptions { PollingInterval = 100, Timeout =

WaitForFunctionAsync

Using AI Code Generation

1using PuppeteerSharp;2using System;3using System.Threading.Tasks;4{5    {6        public static async Task Run()7        {8            await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);9            using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = false }))10            using (var page = await browser.NewPageAsync())11            {12                await page.WaitForFunctionAsync("document.querySelector('input[name=q]').value.length > 2");13                await page.ScreenshotAsync("1.png");14            }15        }16    }17}18using PuppeteerSharp;19using System;20using System.Threading.Tasks;21{22    {23        public static async Task Run()24        {25            await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);26            using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = false }))27            using (var page = await browser.NewPageAsync())28            {29                await page.WaitForSelectorAsync("input[name=q]");30                await page.ScreenshotAsync("2.png");31            }32        }33    }34}35using PuppeteerSharp;36using System;37using System.Threading.Tasks;38{39    {40        public static async Task Run()41        {42            await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);43            using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = false }))44            using (var page = await browser.NewPageAsync())45            {46                await page.ScreenshotAsync("3.png");47            }48        }49    }50}

WaitForFunctionAsync

Using AI Code Generation

1var frame = await page.GetMainFrameAsync();2var function = @"() => {3    return document.querySelector('h1').textContent;4}";5var waitFunction = await frame.WaitForFunctionAsync(function, 5000);6var result = await waitFunction.JsonValueAsync();7Console.WriteLine(result.ToString());8var function = @"() => {9    return document.querySelector('h1').textContent;10}";11var waitFunction = await page.WaitForFunctionAsync(function, 5000);12var result = await waitFunction.JsonValueAsync();13Console.WriteLine(result.ToString());

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