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How to use EvaluateFunctionHandleAsync method of PuppeteerSharp.Page class
Best Puppeteer-sharp code snippet using PuppeteerSharp.Page.EvaluateFunctionHandleAsync
ExecutionContext.cs
Source:ExecutionContext.cs 
...69 /// If the script, returns a Promise, then the method would wait for the promise to resolve and return its value.70 /// <see cref="JSHandle"/> instances can be passed as arguments71 /// </remarks>72 /// <seealso cref="EvaluateExpressionAsync{T}(string)"/>73 /// <seealso cref="EvaluateFunctionHandleAsync(string, object[])"/>74 /// <returns>Task which resolves to script return value</returns>75 public Task<JToken> EvaluateFunctionAsync(string script, params object[] args)76 => EvaluateAsync<JToken>(EvaluateFunctionHandleAsync(script, args));77 /// <summary>78 /// Executes a function in browser context79 /// </summary>80 /// <typeparam name="T">The type to deserialize the result to</typeparam>81 /// <param name="script">Script to be evaluated in browser context</param>82 /// <param name="args">Arguments to pass to script</param>83 /// <remarks>84 /// If the script, returns a Promise, then the method would wait for the promise to resolve and return its value.85 /// <see cref="JSHandle"/> instances can be passed as arguments86 /// </remarks>87 /// <seealso cref="EvaluateExpressionAsync{T}(string)"/>88 /// <seealso cref="EvaluateFunctionHandleAsync(string, object[])"/>89 /// <returns>Task which resolves to script return value</returns>90 public Task<T> EvaluateFunctionAsync<T>(string script, params object[] args)91 => EvaluateAsync<T>(EvaluateFunctionHandleAsync(script, args));92 /// <summary>93 /// The method iterates JavaScript heap and finds all the objects with the given prototype.94 /// </summary>95 /// <returns>A task which resolves to a handle to an array of objects with this prototype.</returns>96 /// <param name="prototypeHandle">A handle to the object prototype.</param>97 public async Task<JSHandle> QueryObjectsAsync(JSHandle prototypeHandle)98 {99 if (prototypeHandle.Disposed)100 {101 throw new PuppeteerException("Prototype JSHandle is disposed!");102 }103 if (!((JObject)prototypeHandle.RemoteObject).TryGetValue(MessageKeys.ObjectId, out var objectId))104 {105 throw new PuppeteerException("Prototype JSHandle must not be referencing primitive value");106 }107 var response = await _client.SendAsync("Runtime.queryObjects", new Dictionary<string, object>108 {109 {"prototypeObjectId", objectId.ToString()}110 }).ConfigureAwait(false);111 return CreateJSHandle(response[MessageKeys.Objects]);112 }113 internal async Task<JSHandle> EvaluateExpressionHandleAsync(string script)114 {115 if (string.IsNullOrEmpty(script))116 {117 return null;118 }119 try120 {121 return await EvaluateHandleAsync("Runtime.evaluate", new Dictionary<string, object>122 {123 ["expression"] = _sourceUrlRegex.IsMatch(script) ? script : $"{script}\n{EvaluationScriptSuffix}",124 ["contextId"] = _contextId,125 ["returnByValue"] = false,126 ["awaitPromise"] = true,127 ["userGesture"] = true128 }).ConfigureAwait(false);129 }130 catch (Exception ex)131 {132 throw new EvaluationFailedException(ex.Message, ex);133 }134 }135 internal async Task<JSHandle> EvaluateFunctionHandleAsync(string script, params object[] args)136 {137 if (string.IsNullOrEmpty(script))138 {139 return null;140 }141 try142 {143 return await EvaluateHandleAsync("Runtime.callFunctionOn", new Dictionary<string, object>144 {145 ["functionDeclaration"] = $"{script}\n{EvaluationScriptSuffix}\n",146 [MessageKeys.ExecutionContextId] = _contextId,147 ["arguments"] = args.Select(FormatArgument),148 ["returnByValue"] = false,149 ["awaitPromise"] = true,...
JSHandle.cs
Source:JSHandle.cs
...7using System.Threading.Tasks;8namespace PuppeteerSharp9{10 /// <summary>11 /// JSHandle represents an in-page JavaScript object. JSHandles can be created with the <see cref="Page.EvaluateExpressionHandleAsync(string)"/> and <see cref="Page.EvaluateFunctionHandleAsync(string, object[])"/> methods.12 /// </summary>13 [JsonConverter(typeof(JSHandleMethodConverter))]14 public class JSHandle15 {16 internal JSHandle(ExecutionContext context, CDPSession client, RemoteObject remoteObject)17 {18 ExecutionContext = context;19 Client = client;20 RemoteObject = remoteObject;21 }22 /// <summary>23 /// Gets the execution context.24 /// </summary>25 /// <value>The execution context.</value>26 public ExecutionContext ExecutionContext { get; }27 /// <summary>28 /// Gets or sets a value indicating whether this <see cref="JSHandle"/> is disposed.29 /// </summary>30 /// <value><c>true</c> if disposed; otherwise, <c>false</c>.</value>31 public bool Disposed { get; private set; }32 /// <summary>33 /// Gets or sets the remote object.34 /// </summary>35 /// <value>The remote object.</value>36 public RemoteObject RemoteObject { get; }37 /// <summary>38 /// Gets the client.39 /// </summary>40 /// <value>The client.</value>41 protected CDPSession Client { get; }42 /// <summary>43 /// Fetches a single property from the referenced object44 /// </summary>45 /// <param name="propertyName">property to get</param>46 /// <returns>Task of <see cref="JSHandle"/></returns>47 public async Task<JSHandle> GetPropertyAsync(string propertyName)48 {49 var objectHandle = await EvaluateFunctionHandleAsync(@"(object, propertyName) => {50 const result = { __proto__: null};51 result[propertyName] = object[propertyName];52 return result;53 }", propertyName).ConfigureAwait(false);54 var properties = await objectHandle.GetPropertiesAsync().ConfigureAwait(false);55 properties.TryGetValue(propertyName, out var result);56 await objectHandle.DisposeAsync().ConfigureAwait(false);57 return result;58 }59 /// <summary>60 /// Returns a <see cref="Dictionary{TKey, TValue}"/> with property names as keys and <see cref="JSHandle"/> instances for the property values.61 /// </summary>62 /// <returns>Task which resolves to a <see cref="Dictionary{TKey, TValue}"/></returns>63 /// <example>64 /// <code>65 /// var handle = await page.EvaluateExpressionHandle("({window, document})");66 /// var properties = await handle.GetPropertiesAsync();67 /// var windowHandle = properties["window"];68 /// var documentHandle = properties["document"];69 /// await handle.DisposeAsync();70 /// </code>71 /// </example>72 public async Task<Dictionary<string, JSHandle>> GetPropertiesAsync()73 {74 var response = await Client.SendAsync<RuntimeGetPropertiesResponse>("Runtime.getProperties", new RuntimeGetPropertiesRequest75 {76 ObjectId = RemoteObject.ObjectId,77 OwnProperties = true78 }).ConfigureAwait(false);79 var result = new Dictionary<string, JSHandle>();80 foreach (var property in response.Result)81 {82 if (property.Enumerable == null)83 {84 continue;85 }86 result.Add(property.Name, ExecutionContext.CreateJSHandle(property.Value));87 }88 return result;89 }90 /// <summary>91 /// Returns a JSON representation of the object92 /// </summary>93 /// <returns>Task</returns>94 /// <remarks>95 /// The method will return an empty JSON if the referenced object is not stringifiable. It will throw an error if the object has circular references96 /// </remarks>97 public async Task<object> JsonValueAsync() => await JsonValueAsync<object>().ConfigureAwait(false);98 /// <summary>99 /// Returns a JSON representation of the object100 /// </summary>101 /// <typeparam name="T">A strongly typed object to parse to</typeparam>102 /// <returns>Task</returns>103 /// <remarks>104 /// The method will return an empty JSON if the referenced object is not stringifiable. It will throw an error if the object has circular references105 /// </remarks>106 public async Task<T> JsonValueAsync<T>()107 {108 var objectId = RemoteObject.ObjectId;109 if (objectId != null)110 {111 var response = await Client.SendAsync<RuntimeCallFunctionOnResponse>("Runtime.callFunctionOn", new RuntimeCallFunctionOnRequest112 {113 FunctionDeclaration = "function() { return this; }",114 ObjectId = objectId,115 ReturnByValue = true,116 AwaitPromise = true117 }).ConfigureAwait(false);118 return (T)RemoteObjectHelper.ValueFromRemoteObject<T>(response.Result);119 }120 return (T)RemoteObjectHelper.ValueFromRemoteObject<T>(RemoteObject);121 }122 /// <summary>123 /// Disposes the Handle. It will mark the JSHandle as disposed and release the <see cref="JSHandle.RemoteObject"/>124 /// </summary>125 /// <returns>The async.</returns>126 public async Task DisposeAsync()127 {128 if (Disposed)129 {130 return;131 }132 Disposed = true;133 await RemoteObjectHelper.ReleaseObjectAsync(Client, RemoteObject).ConfigureAwait(false);134 }135 /// <inheritdoc/>136 public override string ToString()137 {138 if (RemoteObject.ObjectId != null)139 {140 var type = RemoteObject.Subtype != RemoteObjectSubtype.Other141 ? RemoteObject.Subtype.ToString()142 : RemoteObject.Type.ToString();143 return "JSHandle@" + type.ToLower(System.Globalization.CultureInfo.CurrentCulture);144 }145 return "JSHandle:" + RemoteObjectHelper.ValueFromRemoteObject<object>(RemoteObject)?.ToString();146 }147 /// <summary>148 /// Executes a script in browser context149 /// </summary>150 /// <param name="pageFunction">Script to be evaluated in browser context</param>151 /// <param name="args">Function arguments</param>152 /// <remarks>153 /// If the script, returns a Promise, then the method would wait for the promise to resolve and return its value.154 /// <see cref="JSHandle"/> instances can be passed as arguments155 /// </remarks>156 /// <returns>Task which resolves to script return value</returns>157 public Task<JSHandle> EvaluateFunctionHandleAsync(string pageFunction, params object[] args)158 {159 var list = new List<object>(args);160 list.Insert(0, this);161 return ExecutionContext.EvaluateFunctionHandleAsync(pageFunction, list.ToArray());162 }163 /// <summary>164 /// Executes a function in browser context165 /// </summary>166 /// <param name="script">Script to be evaluated in browser context</param>167 /// <param name="args">Arguments to pass to script</param>168 /// <remarks>169 /// If the script, returns a Promise, then the method would wait for the promise to resolve and return its value.170 /// <see cref="JSHandle"/> instances can be passed as arguments171 /// </remarks>172 /// <returns>Task which resolves to script return value</returns>173 public Task<JToken> EvaluateFunctionAsync(string script, params object[] args)174 {175 var list = new List<object>(args);...
PageExtensions.cs
Source:PageExtensions.cs
...17 /// <returns>Task which resolves to <see cref="ElementHandle"/> pointing to the frame element</returns>18 /// <seealso href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp"/>19 public static async Task<ElementHandle> QuerySelectorWithContentAsync(this Page page, string selector, string regex, string flags = "")20 {21 return await page.GuardFromNull().EvaluateFunctionHandleAsync(22 @"(selector, regex, flags) => {23 var elements = document.querySelectorAll(selector);24 return Array.prototype.find.call(elements, function(element) {25 return RegExp(regex, flags).test(element.textContent);26 });27 }", selector, regex, flags).ConfigureAwait(false) as ElementHandle;28 }29 /// <summary>30 /// The method runs <c>document.querySelectorAll</c> within the page and then tests a <c>RegExp</c> against the elements <c>textContent</c>. All element matches are returned. If no element matches the selector and regular expression, the return value resolve to <see cref="System.Array.Empty{T}"/>.31 /// </summary>32 /// <param name="page">A <see cref="Page"/> to query</param>33 /// <param name="selector">A selector to query page for</param>34 /// <param name="regex">A regular expression to test against <c>element.textContent</c></param>35 /// <param name="flags">A set of flags for the regular expression</param>36 /// <returns>Task which resolves to ElementHandles pointing to the frame elements</returns>37 /// <seealso href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp"/>38 public static async Task<ElementHandle[]> QuerySelectorAllWithContentAsync(this Page page, string selector, string regex, string flags = "")39 {40 var arrayHandle = await page.GuardFromNull().EvaluateFunctionHandleAsync(41 @"(selector, regex, flags) => {42 var elements = document.querySelectorAll(selector);43 return Array.prototype.filter.call(elements, function(element) {44 return RegExp(regex, flags).test(element.textContent);45 });46 }", selector, regex, flags).ConfigureAwait(false);47 var properties = await arrayHandle.GetPropertiesAsync().ConfigureAwait(false);48 await arrayHandle.DisposeAsync().ConfigureAwait(false);49 return properties.Values.OfType<ElementHandle>().ToArray();50 }51 /// <summary>52 /// Indicates whether the page has the specified content or not.53 /// </summary>54 /// <param name="page">A <see cref="Page"/></param>...
IowaOnlineRepository.cs
Source:IowaOnlineRepository.cs
...52 await page.CloseAsync();53 foreach (var row in result)54 {55 var contents = (await (await row.GetPropertyAsync("outerText")).JsonValueAsync()).ToString();56 var detailsId = (await (await row.EvaluateFunctionHandleAsync("element => element.attributes.onclick.value")).JsonValueAsync()).ToString().Split("&id=")[1].Split("';")[0];57 var splitRow = contents.Split("\t");58 IowaOnlineChild child = new IowaOnlineChild();59 child.Name = splitRow[0];60 child.Sex = splitRow[1];61 child.LastContact = splitRow[2];62 child.AgeThen = splitRow[3];63 child.AgeNow = splitRow[4];64 child.OriginatingAgency = splitRow[5];65 child.IncidentType = splitRow[6];66 //now go to their details page and retrieve the description67 try68 {69 page = await browser.NewPageAsync();70 await page.GoToAsync(detailsBaseUrl + detailsId);...
pay.cshtml.cs
Source:pay.cshtml.cs
...25 Devtools = true26 });27 var page = await browser.NewPageAsync();28 await page.GoToAsync("https://upay.10010.com/jf_wxgz");29 await page.EvaluateFunctionHandleAsync("() =>{Object.defineProperty(navigator, 'webdriver', {get: () => false});}");30 await page.EvaluateFunctionOnNewDocumentAsync("() =>{ window.navigator.chrome = { runtime: {}, }; }");31 await page.EvaluateFunctionOnNewDocumentAsync("() =>{ Object.defineProperty(navigator, 'languages', { get: () => ['en-US', 'en'] }); }");32 await page.EvaluateFunctionOnNewDocumentAsync("() =>{ Object.defineProperty(navigator, 'plugins', { get: () => [1, 2, 3, 4, 5,6], }); }");33 Console.WriteLine(await page.EvaluateExpressionAsync("navigator.webdriver"));34 //ÌîдÊÖ»úºÅÂë35 string phone = "13113075869";36 await page.ClickAsync("#number");37 await page.TypeAsync("#number", phone);38 Thread.Sleep(1000);39 //µã»÷³äÖµ°´Å¥40 await page.ClickAsync("#cardlist > section > div.mobile-cardlist.cardlista > a:nth-child(1)");41 ElementHandle slideBtn = null;42 try43 {...
PageEvaluateHandle.cs
Source:PageEvaluateHandle.cs
...13 }14 [PuppeteerTest("jshandle.spec.ts", "Page.evaluateHandle", "should work")]15 [PuppeteerFact]16 public async Task ShouldWork()17 => Assert.NotNull(await Page.EvaluateFunctionHandleAsync("() => window"));18 [PuppeteerTest("jshandle.spec.ts", "Page.evaluateHandle", "should accept object handle as an argument")]19 [PuppeteerFact]20 public async Task ShouldAcceptObjectHandleAsAnArgument()21 {22 var navigatorHandle = await Page.EvaluateFunctionHandleAsync("() => navigator");23 var text = await Page.EvaluateFunctionAsync<string>(24 "(e) => e.userAgent",25 navigatorHandle);26 Assert.Contains("Mozilla", text);27 }28 [PuppeteerTest("jshandle.spec.ts", "Page.evaluateHandle", "should accept object handle to primitive types")]29 [PuppeteerFact]30 public async Task ShouldAcceptObjectHandleToPrimitiveTypes()31 {32 var aHandle = await Page.EvaluateFunctionHandleAsync("() => 5");33 var isFive = await Page.EvaluateFunctionAsync<bool>(34 "(e) => Object.is(e, 5)",35 aHandle);36 Assert.True(isFive);37 }38 [PuppeteerTest("jshandle.spec.ts", "Page.evaluateHandle", "should warn on nested object handles")]39 [PuppeteerFact]40 public async Task ShouldWarnOnNestedObjectHandles()41 {42 var aHandle = await Page.EvaluateFunctionHandleAsync("() => document.body");43 var exception = await Assert.ThrowsAsync<EvaluationFailedException>(() =>44 Page.EvaluateFunctionHandleAsync("(opts) => opts.elem.querySelector('p')", new { aHandle }));45 Assert.Contains("Are you passing a nested JSHandle?", exception.Message);46 }47 [PuppeteerTest("jshandle.spec.ts", "Page.evaluateHandle", "should accept object handle to unserializable value")]48 [PuppeteerFact]49 public async Task ShouldAcceptObjectHandleToUnserializableValue()50 {51 var aHandle = await Page.EvaluateFunctionHandleAsync("() => Infinity");52 Assert.True(await Page.EvaluateFunctionAsync<bool>(53 "(e) => Object.is(e, Infinity)",54 aHandle));55 }56 [PuppeteerTest("jshandle.spec.ts", "Page.evaluateHandle", "should use the same JS wrappers")]57 [PuppeteerFact]58 public async Task ShouldUseTheSameJSWrappers()59 {60 var aHandle = await Page.EvaluateFunctionHandleAsync(@"() => {61 globalThis.FOO = 123;62 return window;63 }");64 Assert.Equal(123, await Page.EvaluateFunctionAsync<int>(65 "(e) => e.FOO",66 aHandle));67 }68 }69}...
JsonValueTests.cs
Source:JsonValueTests.cs
...23 [PuppeteerTest("jshandle.spec.ts", "JSHandle.jsonValue", "works with jsonValues that are not objects")]24 [SkipBrowserFact(skipFirefox: true)]25 public async Task WorksWithJsonValuesThatAreNotObjects()26 {27 var aHandle = await Page.EvaluateFunctionHandleAsync("() => ['a', 'b']");28 var json = await aHandle.JsonValueAsync<string[]>();29 Assert.Equal(new[] {"a","b" }, json);30 }31 [PuppeteerTest("jshandle.spec.ts", "JSHandle.jsonValue", "works with jsonValues that are primitives")]32 [SkipBrowserFact(skipFirefox: true)]33 public async Task WorksWithJsonValuesThatArePrimitives()34 {35 var aHandle = await Page.EvaluateFunctionHandleAsync("() => 'foo'");36 var json = await aHandle.JsonValueAsync<string>();37 Assert.Equal("foo", json);38 }39 [PuppeteerTest("jshandle.spec.ts", "JSHandle.jsonValue", "should not work with dates")]40 [SkipBrowserFact(skipFirefox: true)]41 public async Task ShouldNotWorkWithDates()42 {43 var dateHandle = await Page.EvaluateExpressionHandleAsync("new Date('2017-09-26T00:00:00.000Z')");44 var json = await dateHandle.JsonValueAsync();45 Assert.Equal(JObject.Parse("{}"), json);46 }47 [PuppeteerTest("jshandle.spec.ts", "JSHandle.jsonValue", "should throw for circular objects")]48 [PuppeteerFact]49 public async Task ShouldThrowForCircularObjects()...
GetPropertiesTests.cs
Source:GetPropertiesTests.cs
...22 }23 [Fact]24 public async Task ShouldReturnEvenNonOwnProperties()25 {26 var aHandle = await Page.EvaluateFunctionHandleAsync(@"() => {27 class A {28 constructor() {29 this.a = '1';30 }31 }32 class B extends A {33 constructor() {34 super();35 this.b = '2';36 }37 }38 return new B();39 }");40 var properties = await aHandle.GetPropertiesAsync();...
EvaluateFunctionHandleAsync
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 = false };9 using (var browser = await Puppeteer.LaunchAsync(options))10 using (var page = await browser.NewPageAsync())11 {12 var input = await page.QuerySelectorAsync("input");13 await input.TypeAsync("PuppeteerSharp");14 await page.EvaluateFunctionHandleAsync(@"() => {15 var a = document.createElement('a');
EvaluateFunctionHandleAsync
Using AI Code Generation
1using System;2using System.Threading.Tasks;3using PuppeteerSharp;4{5 {6 static async Task Main(string[] args)7 {8 {9 };10 var browser = await Puppeteer.LaunchAsync(options);11 var page = await browser.NewPageAsync();12 var title = await page.EvaluateFunctionHandleAsync("() => document.title");13 Console.WriteLine(title);14 await browser.CloseAsync();15 }16 }17}18using System;19using System.Threading.Tasks;20using PuppeteerSharp;21{22 {23 static async Task Main(string[] args)24 {25 {26 };27 var browser = await Puppeteer.LaunchAsync(options);28 var page = await browser.NewPageAsync();29 var title = await page.EvaluateFunctionHandleAsync("() => document.title");30 Console.WriteLine(title.JsonValue);31 Console.WriteLine(title.RemoteObject);32 Console.WriteLine(title.ExecutionContext);33 Console.WriteLine(title.Page);34 await browser.CloseAsync();35 }36 }37}38using System;39using System.Threading.Tasks;40using PuppeteerSharp;41{42 {43 static async Task Main(string[] args)44 {45 {46 };
EvaluateFunctionHandleAsync
Using AI Code Generation
1using System;2using System.Threading.Tasks;3using PuppeteerSharp;4{5 {6 static async Task Main(string[] args)7 {8 {9 };10 var browser = await Puppeteer.LaunchAsync(options);11 var page = await browser.NewPageAsync();12 var title = await page.EvaluateFunctionHandleAsync("() => document.title");13 Console.WriteLine(title);14 await browser.CloseAsync();15 }16 }17}18using System;19using System.Threading.Tasks;20using PuppeteerSharp;21{22 {23 static async Task Main(string[] args)24 {25 {26 };27 var browser = await Puppeteer.LaunchAsync(options);28 var page = await browser.NewPageAsync();29 var title = await page.Evaluatalue);30 }31 }32}
EvaluateFunctionHandleAsync
Using AI Code Generation
1using System;2using System.Threading.Tasks;3using PuppeteerSharp;4{5{6static async Task Main(string[] args)7{8await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevisionctionHandleAsync("() => document.title");9var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = false );10var page = await browser.NewPageAsync();11await page.EvaluateFunctionHandleAsync("() => document.querySelector('input').value = 'PuppeteerSharp'"); Console.WriteLine(title.JsonValue);12await page.PressAsync("input", "Enter");13await page.WaitForSelectorAsync(".g");14await page.ScreenshotAsync("example.png");15await browser.CloseAsync();16}17 Console.WriteLine(title.RemoteObject);18 Console.WriteLine(title.ExecutionContext);19 Console.WriteLine(title.Page);20Telegram await browser.CloseAsync();21 }22 ocket }23}24using System;25using System.Threading.Tasks;26using PuppeteerSharp;27{28 {29 static async Task Main(string[] args)30 {31 {32 };
EvaluateFunctionHandleAsync
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 = false };9 var browser = await Puppeteer.LaunchAsync(options);10 var page = await browser.NewPageAsync();11 var searchBox = await page.QuerySelectorAsync("input[name='q']");12 await searchBox.TypeAsync("PuppeteerSharp");13 var searchButton = await page.QuerySelectorAsync("input[value='Google Search']");14 await searchButton.ClickAsync();15 await page.WaitForNavigationAsync();16 var result = awainFrameAsync();
EvaluateFunctionHandleAsync
Using AI Code Generation
1using System;2using System.Threading.Tasks;3using PuppeteerSharp;4{5 {6 static async Task Main(string[] args)7 {8 await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);9 using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions10 {11 Args = new string[] { "--no-sandbox" }12 }))13 {14 using (var page = await browser.NewPageAsync())15 {16 var title = await page.EvaluateFunctionHandleAsync<stritg>("() => document.title");17 Console.WriteLine(title);18 }19 }20 }21 }22}23using System;24using System.Threading.Tasks;25using PuppeteerShapp;26{27 {28 static async Task Main(string[] args)29 {30 await new BrowserFetcher().Download.EvaluBrowserFetcher.DefaultRevisionateFunctionHandleAsync("() => document.body.innerHTML");31 using ( r browse = await Puppeteer.LaunchAsync(new LaunchOptions32 {33 Args = new string[] { "--no-sandbox" }34 }))35 {36 using (var page = await browser.NewPageAsync())37 {38 var title = await page.EvaluateFunctionHandleAsync<string>("() => document.title");39 Console.WriteLine(title);40 }41 }42 }43 }44}45using System;46using System.Threading.Tasks;47using PuppeteerSharp;48{49 {50 static asynce.WriteLine(result);51 }52 }53}54using System;55using System.Threading.Tasks;56using PuppeteerSharp;57{58 {59 static async Task Main(string[] args)60 {61 var options = new LaunchOptions { Headless = false };62 var browser = await Puppeteer.LaunchAsync(options);63 var page = await browser.NewPageAsync();64 var searchBox = await page.QuerySelectorAsync("input[name='q']");65 await searchBox.TypeAsync("PuppeteerSharp");66 var searchButton = await page.QuerySelectorAsync("input[value='Google Search']");67 await searchButton.ClickAsync();68 await page.WaitForNavigationAsync();69 var result = await page.EvaluateFunctionHandleAsync("() => document.body.innerHTML");70 Console.WriteLine(result.JsonValue);71 }72 }73}
EvaluateFunctionHandleAsync
Using AI Code Generation
1using System;2using System.Threading.Tasks;3using PuppeteerSharp;4{5{6static async Task Main(string[] args)7{8await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);9var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = false });10var page = await browser.NewPageAsync();11await page.EvaluateFunctionHandleAsync("() => document.querySelector('input').value = 'PuppeteerSharp'");12await page.PressAsync("input", "Enter");13await page.WaitForSelectorAsync(".g");14await page.ScreenshotAsync("example.png");15await browser.CloseAsync();16}17}18}
EvaluateFunctionHandleAsync
Using AI Code Generation
1var page = await browser.NewPageAsync();2var functionHandle = await page.EvaluateFunctionHandleAsync("() => document.body");3var frame = await page.GetMainFrameAsync();4var functionHandle = await frame.EvaluateFunctionHandleAsync("() => document.body");5var page = await browser.NewPageAsync();6var functionHandle = await page.EvaluateFunctionHandleAsync("() => document.body");7var frame = await page.GetMainFrameAsync();8var functionHandle = await frame.EvaluateFunctionHandleAsync("() => document.body");9var page = await browser.NewPageAsync();10var functionHandle = await page.EvaluateFunctionHandleAsync("() => document.body");11var frame = await page.GetMainFrameAsync();12var functionHandle = await frame.EvaluateFunctionHandleAsync("() => document.body");13var page = await browser.NewPageAsync();14var functionHandle = await page.EvaluateFunctionHandleAsync("() => document.body");15var frame = await page.GetMainFrameAsync();16var functionHandle = await frame.EvaluateFunctionHandleAsync("() => document.body");17var page = await browser.NewPageAsync();18var functionHandle = await page.EvaluateFunctionHandleAsync("() => document.body");19var frame = await page.GetMainFrameAsync();20var functionHandle = await frame.EvaluateFunctionHandleAsync("() => document.body");21var page = await browser.NewPageAsync();22var functionHandle = await page.EvaluateFunctionHandleAsync("() => document.body");23var frame = await page.GetMainFrameAsync();
EvaluateFunctionHandleAsync
Using AI Code Generation
1using System;2using System.Threading.Tasks;3using PuppeteerSharp;4{5 {6 static async Task Main(string[] args)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 var handle = await page.EvaluateFunctionHandleAsync(@"() => {13 return () => 123;14 }");15 var result = await page.EvaluateFunctionAsync<int>(@"(arg) => {16 return arg();17 }", handle);18 Console.WriteLine(result);19 }20 }21 }22}23using System;24using System.Threading.Tasks;25using PuppeteerSharp;26{27 {28 static async Task Main(string[] args)29 {30 await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);31 using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions { Headless = false }))32 using (var page = await browser.NewPageAsync())33 {34 var handle = await page.EvaluateFunctionHandleAsync(@"() => {35 return () => 123;36 }");37 var result = await page.EvaluateFunctionAsync<int>(@"(arg) => {38 return arg();39 }", handle);40 Console.WriteLine(result);41 }42 }43 }44}45using System;46using System.Threading.Tasks;47using PuppeteerSharp;48{49 {50 static async Task Main(string[] args)51 {52 await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultRevision);53 using (var browser = await Puppeteer.LaunchAsync(new Launch
EvaluateFunctionHandleAsync
Using AI Code Generation
1var result = await page.EvaluateFunctionHandleAsync("() => {return 1 + 1;}");2var value = await result.jsonValue();3Console.WriteLine(value);4var function = "function(a, b) {return a + b;}";5var result = await page.EvaluateFunctionHandleAsync(function, 1, 2);6var value = await result.jsonValue();7Console.WriteLine(value);8var function = "function() {return 1 + 1;}";9var result = await page.EvaluateFunctionHandleAsync(function);10var value = await result.jsonValue();11Console.WriteLine(value);12var function = "function() {return 1 + 1;}";13var result = await page.EvaluateFunctionHandleAsync(function);14var value = await result.jsonValue();15Console.WriteLine(value);16var function = "function() {return 1 + 1;}";17var result = await page.EvaluateFunctionHandleAsync(function);18var value = await result.jsonValue();19Console.WriteLine(value);20var function = "function() {return 1 + 1;}";21var result = await page.EvaluateFunctionHandleAsync(function);
Automation Testing Tutorials
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Most used method in Page
- FrameManagerGetFrames
- workersValuesToArray
- PopupGetInvocationList
- clientDisconnected
- SetGeolocationAsync
- SetDragInterceptionAsync
- MetricsAsync
- TapAsync
- QuerySelectorAsync
- QuerySelectorAllAsync
- QuerySelectorAllHandleAsync
- XPathAsync
- EvaluateExpressionHandleAsync
- EvaluateFunctionHandleAsync
- EvaluateOnNewDocumentAsync
- EvaluateFunctionOnNewDocumentAsync
- EvaluateExpressionOnNewDocumentAsync
- QueryObjectsAsync
- SetRequestInterceptionAsync
- SetOfflineModeAsync
- EmulateNetworkConditionsAsync
- GetCookiesAsync
- SetCookieAsync
- DeleteCookieAsync
- AddScriptTagAsync
- AddStyleTagAsync
- ExposeFunctionAsync
- TResult
- GetContentAsync
- SetContentAsync
- GoToAsync
- PdfAsync
- PdfStreamAsync
- PdfDataAsync
- SetJavaScriptEnabledAsync
- SetBypassCSPAsync
- EmulateMediaAsync
- EmulateMediaTypeAsync
- EmulateMediaFeaturesAsync
- SetViewportAsync
- EmulateAsync
- ScreenshotAsync
- ScreenshotStreamAsync
- ScreenshotBase64Async
- ScreenshotDataAsync
- GetTitleAsync
- CloseAsync
- SetCacheEnabledAsync
- ClickAsync
- HoverAsync
- FocusAsync
- TypeAsync
- EvaluateExpressionAsync
- EvaluateFunctionAsync
- SetUserAgentAsync
- SetExtraHttpHeadersAsync
- AuthenticateAsync
- ReloadAsync
- SelectAsync
- WaitForTimeoutAsync
- WaitForFunctionAsync
- WaitForExpressionAsync
- WaitForSelectorAsync
- WaitForXPathAsync
- WaitForNavigationAsync
- WaitForNetworkIdleAsync
- Evaluate
- requestEventListener
- responseEventListener
- Cleanup
- WaitForRequestAsync
- WaitForResponseAsync
- WaitForFileChooserAsync
- GoBackAsync
- GoForwardAsync
- SetBurstModeOffAsync
- BringToFrontAsync
- EmulateVisionDeficiencyAsync
- EmulateTimezoneAsync
- EmulateIdleStateAsync
- EmulateCPUThrottlingAsync
- OnPopup
- InitializeAsync
- GoAsync
- ClientMessageReceived
- OnDetachedFromTarget
- OnTargetCrashed
- EmitMetrics
- HandleException
- OnDialog
- Dispose
- DisposeAsync
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