How to use WaitForFunctionAsync method of Microsoft.Playwright.Core.Frame class

Best Playwright-dotnet code snippet using Microsoft.Playwright.Core.Frame.WaitForFunctionAsync

Page.cs

Source:Page.cs

...319        public Task<IResponse> RunAndWaitForResponseAsync(Func<Task> action, Regex urlOrPredicate, PageRunAndWaitForResponseOptions options = default)320            => InnerWaitForEventAsync(PageEvent.Response, action, e => urlOrPredicate.IsMatch(e.Url), options?.Timeout);321        public Task<IResponse> RunAndWaitForResponseAsync(Func<Task> action, Func<IResponse, bool> urlOrPredicate, PageRunAndWaitForResponseOptions options = default)322            => InnerWaitForEventAsync(PageEvent.Response, action, e => urlOrPredicate(e), options?.Timeout);323        public Task<IJSHandle> WaitForFunctionAsync(string expression, object arg = default, PageWaitForFunctionOptions options = default)324            => MainFrame.WaitForFunctionAsync(expression, arg, new() { PollingInterval = options?.PollingInterval, Timeout = options?.Timeout });325        public async Task<T> InnerWaitForEventAsync<T>(PlaywrightEvent<T> pageEvent, Func<Task> action = default, Func<T, bool> predicate = default, float? timeout = default)326        {327            if (pageEvent == null)328            {329                throw new ArgumentException("Page event is required", nameof(pageEvent));330            }331            timeout ??= _defaultTimeout;332            using var waiter = new Waiter(this, $"page.WaitForEventAsync(\"{typeof(T)}\")");333            waiter.RejectOnTimeout(Convert.ToInt32(timeout), $"Timeout {timeout}ms exceeded while waiting for event \"{pageEvent.Name}\"");334            if (pageEvent.Name != PageEvent.Crash.Name)335            {336                waiter.RejectOnEvent<IPage>(this, PageEvent.Crash.Name, new("Page crashed"));337            }338            if (pageEvent.Name != PageEvent.Close.Name)...

Frame.cs

Source:Frame.cs

...385        public async Task<IElementHandle> QuerySelectorAsync(string selector)386            => (await _channel.QuerySelectorAsync(selector).ConfigureAwait(false))?.Object;387        public async Task<IReadOnlyList<IElementHandle>> QuerySelectorAllAsync(string selector)388            => (await _channel.QuerySelectorAllAsync(selector).ConfigureAwait(false)).Select(c => ((ElementHandleChannel)c).Object).ToList().AsReadOnly();389        public async Task<IJSHandle> WaitForFunctionAsync(string expression, object arg = default, FrameWaitForFunctionOptions options = default)390             => (await _channel.WaitForFunctionAsync(391                expression: expression,392                arg: ScriptsHelper.SerializedArgument(arg),393                timeout: options?.Timeout,394                polling: options?.PollingInterval).ConfigureAwait(false)).Object;395        public async Task<IElementHandle> WaitForSelectorAsync(string selector, FrameWaitForSelectorOptions options = default)396            => (await _channel.WaitForSelectorAsync(397                selector: selector,398                state: options?.State,399                timeout: options?.Timeout,400                strict: options?.Strict,401                omitReturnValue: false).ConfigureAwait(false))?.Object;402        public async Task<IElementHandle> LocatorWaitForAsync(string selector, LocatorWaitForOptions options = default)403            => (await _channel.WaitForSelectorAsync(404                selector: selector,...

FrameChannel.cs

Source:FrameChannel.cs

...90                    ["expression"] = script,91                    ["arg"] = arg,92                });93        }94        internal Task<JSHandleChannel> WaitForFunctionAsync(95            string expression,96            object arg,97            float? timeout,98            float? polling)99        {100            var args = new Dictionary<string, object>101            {102                ["expression"] = expression,103                ["arg"] = arg,104                ["timeout"] = timeout,105                ["pollingInterval"] = polling,106            };107            return Connection.SendMessageToServerAsync<JSHandleChannel>(108                Guid,...

WaitForFunctionAsync

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using Microsoft.Playwright;4{5    {6        static async Task Main(string[] args)7        {8            using var playwright = await Playwright.CreateAsync();9            await using var browser = await playwright.Chromium.LaunchAsync(headless: false);10            var page = await browser.NewPageAsync();11            await page.ClickAsync("text=Sign in");12            await page.TypeAsync("[name=\"identifier\"]", "yourEmail");13            await page.ClickAsync("text=Next");14            await page.WaitForFunctionAsync("document.querySelector(\"[name=\\\"password\\\"]\").value.length >= 1");15            await page.TypeAsync("[name=\"password\"]", "yourPassword");16            await page.ClickAsync("text=Next");17            await page.WaitForLoadStateAsync(LoadState.DOMContentLoaded);18            await page.ScreenshotAsync(new PageScreenshotOptions { Path = "screenshot.png" });19        }20    }21}

WaitForFunctionAsync

Using AI Code Generation

1using Microsoft.Playwright;2using System;3using System.Threading.Tasks;4{5    {6        static async Task Main(string[] args)7        {8            using var playwright = await Playwright.CreateAsync();9            await using var browser = await playwright.Chromium.LaunchAsync();10            var page = await browser.NewPageAsync();11            await page.WaitForFunctionAsync("() => document.querySelector('input[name=\"q\"]').value == 'test'");12        }13    }14}15using Microsoft.Playwright;16using System;17using System.Threading.Tasks;18{19    {20        static async Task Main(string[] args)21        {22            using var playwright = await Playwright.CreateAsync();23            await using var browser = await playwright.Chromium.LaunchAsync();24            var page = await browser.NewPageAsync();25            await page.WaitForFunctionAsync("() => document.querySelector('input[name=\"q\"]').value == 'test'");26        }27    }28}29using Microsoft.Playwright;30using System;31using System.Threading.Tasks;32{33    {34        static async Task Main(string[] args)35        {36            using var playwright = await Playwright.CreateAsync();37            await using var browser = await playwright.Chromium.LaunchAsync();38            var page = await browser.NewPageAsync();39            var input = await page.QuerySelectorAsync("input[name=\"q\"]");40            await input.WaitForFunctionAsync("() => document.querySelector('input[name=\"q\"]').value == 'test'");41        }42    }43}44using Microsoft.Playwright;45using System;46using System.Threading.Tasks;47{48    {49        static async Task Main(string[] args)50        {51            using var playwright = await Playwright.CreateAsync();52            await using var browser = await playwright.Chromium.LaunchAsync();53            var page = await browser.NewPageAsync();

WaitForFunctionAsync

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using Microsoft.Playwright;4{5    {6        static async Task Main(string[] args)7        {8            using var playwright = await Playwright.CreateAsync();9            await using var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions10            {11            });12            var context = await browser.NewContextAsync();13            var page = await context.NewPageAsync();14            await page.ClickAsync("input[name=q]");15            await page.TypeAsync("input[name=q]", "Hello World");16            await page.ClickAsync("input[name=btnK]");17            var result = await page.WaitForFunctionAsync("document.querySelector('input[name=q]').value == 'Hello World'");18        }19    }20}21using System;22using System.Threading.Tasks;23using Microsoft.Playwright;24{25    {26        static async Task Main(string[] args)27        {28            using var playwright = await Playwright.CreateAsync();29            await using var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions30            {31            });32            var context = await browser.NewContextAsync();33            var page = await context.NewPageAsync();34            await page.ClickAsync("input[name=q]");35            await page.TypeAsync("input[name=q]", "Hello World");36            await page.ClickAsync("input[name=btnK]");37            var result = await page.WaitForFunctionAsync("document.querySelector('input[name=q]').value == 'Hello World'");38        }39    }40}41using System;42using System.Threading.Tasks;43using Microsoft.Playwright;44{45    {46        static async Task Main(string[] args)47        {48            using var playwright = await Playwright.CreateAsync();49            await using var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions50            {51            });52            var context = await browser.NewContextAsync();53            var page = await context.NewPageAsync();54            await page.GotoAsync("https

WaitForFunctionAsync

Using AI Code Generation

1using Microsoft.Playwright.Core;2using System;3using System.Threading.Tasks;4{5    {6        static async Task Main(string[] args)7        {8            var playwright = await Playwright.CreateAsync();9            var browser = await playwright.Chromium.LaunchAsync();10            var page = await browser.NewPageAsync();11            await page.WaitForFunctionAsync("() => document.title === 'Google'");12            await page.ScreenshotAsync("google.png");13            await browser.CloseAsync();14        }15    }16}17using Microsoft.Playwright.Core;18using System;19using System.Threading.Tasks;20{21    {22        static async Task Main(string[] args)23        {24            var playwright = await Playwright.CreateAsync();25            var browser = await playwright.Chromium.LaunchAsync();26            var page = await browser.NewPageAsync();27            await page.WaitForFunctionAsync("() => document.title === 'Google'", new WaitForFunctionOptions { Timeout = 5000 });28            await page.ScreenshotAsync("google.png");29            await browser.CloseAsync();30        }31    }32}33using Microsoft.Playwright.Core;34using System;35using System.Threading.Tasks;36{37    {38        static async Task Main(string[] args)39        {40            var playwright = await Playwright.CreateAsync();41            var browser = await playwright.Chromium.LaunchAsync();42            var page = await browser.NewPageAsync();43            await page.WaitForFunctionAsync("() => document.title === 'Google'", new WaitForFunctionOptions { PollingInterval = 500 });44            await page.ScreenshotAsync("google.png");45            await browser.CloseAsync();46        }47    }48}49using Microsoft.Playwright.Core;50using System;51using System.Threading.Tasks;52{53    {54        static async Task Main(string[] args)55        {56            var playwright = await Playwright.CreateAsync();

WaitForFunctionAsync

Using AI Code Generation

1using Microsoft.Playwright.Core;2using System;3using System.Threading.Tasks;4{5    {6        static async Task Main(string[] args)7        {8            var playwright = await Playwright.CreateAsync();9            var browser = await playwright.Chromium.LaunchAsync();10            var page = await browser.NewPageAsync();11            var frame = page.MainFrame;12            var wait = await frame.WaitForFunctionAsync(@"() => {13                return document.querySelector('#foo') !== null;14            }", new WaitForFunctionOptions15            {16            });17            var result = await frame.EvaluateAsync<bool>(@"() => {18                return document.querySelector('#foo') !== null;19            }");20            Console.WriteLine(result);21            await browser.CloseAsync();22        }23    }24}25using Microsoft.Playwright.Core;26using System;27using System.Threading.Tasks;28{29    {30        static async Task Main(string[] args)31        {32            var playwright = await Playwright.CreateAsync();33            var browser = await playwright.Chromium.LaunchAsync();34            var page = await browser.NewPageAsync();35            var frame = page.MainFrame;36            var wait = await frame.WaitForFunctionAsync(@"() => {37                return document.querySelector('#foo') !== null;38            }", new WaitForFunctionOptions39            {40            });41            var result = await frame.EvaluateAsync<bool>(@"() => {42                return document.querySelector('#foo') !== null;43            }");44            Console.WriteLine(result);45            await browser.CloseAsync();46        }47    }48}49using Microsoft.Playwright.Core;50using System;51using System.Threading.Tasks;52{53    {54        static async Task Main(string

WaitForFunctionAsync

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using Microsoft.Playwright;4using System.Linq;5{6    {7        static async Task Main(string[] args)8        {9            await using var playwright = await Playwright.CreateAsync();10            await using var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions11            {12            });13            var page = await browser.NewPageAsync();14            var frame = page.MainFrame.ChildFrames.FirstOrDefault();15            await frame.WaitForFunctionAsync("() => window.innerWidth < 100");16            await page.ScreenshotAsync("screenshot.png");17            await browser.CloseAsync();18        }19    }20}21using System;22using System.Threading.Tasks;23using Microsoft.Playwright;24using System.Linq;25{26    {27        static async Task Main(string[] args)28        {29            await using var playwright = await Playwright.CreateAsync();30            await using var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions31            {32            });

WaitForFunctionAsync

Using AI Code Generation

1using Microsoft.Playwright;2using System;3using System.Threading.Tasks;4{5    {6        static async Task Main(string[] args)7        {8            using var playwright = await Playwright.CreateAsync();9            await using var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions10            {11            });12            var page = await browser.NewPageAsync();13            var searchBox = await page.WaitForSelectorAsync("input[name=q]");14            await searchBox.TypeAsync("playwright");15            await page.ClickAsync("text=Search");16            await page.WaitForFunctionAsync("() => document.querySelector('.b_algo') != null");17            await page.ScreenshotAsync("screenshot.png");18        }19    }20}21using Microsoft.Playwright;22using System;23using System.Threading.Tasks;24{25    {26        static async Task Main(string[] args)27        {28            using var playwright = await Playwright.CreateAsync();29            await using var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions30            {31            });32            var page = await browser.NewPageAsync();33            var searchBox = await page.WaitForSelectorAsync("input[name=q]");34            await searchBox.TypeAsync("playwright");35            await page.ClickAsync("text=Search");36            await page.WaitForFunctionAsync("() => document.querySelector('.b_algo') != null");37            await page.ScreenshotAsync("screenshot.png");38        }39    }40}41using Microsoft.Playwright;42using System;43using System.Threading.Tasks;44{45    {46        static async Task Main(string[] args

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