如何从 GetElementById 获取值？
How to get value from GetElementById?
nxuybcbkbcbggkcwcbregrwyywbrgewbyrewyreyrwebyrwrwe
测试
Browser.ExecuteScriptAsync();
发送 javascript 并在 return 中不期望任何内容，因此尝试将 'nothing'（即无效）分配给 HtmlElement 变量是不行的。
如果您希望发送 javascript 的页面并使用返回的内容，则需要使用 EvaluateScriptAsync()
这将 return 一个 Task<JavascriptResponse>，如果您试图将它分配给 Size，它仍然无法工作。坏消息是：JavascriptResponse 只能是基本数据类型（int、bool、string 等）。根据他们的文档：
Only trivial values can be returned (like int, bool, string etc) - not
a complex (user-defined) type which you have defined yourself. This is
because there is no (easy) way to expose a random Javascript object to
the .NET world, at least not today. However, one possible technique is
to turn the Javascript object you wish to return to your .NET code
into a JSON string with the Javascript JSON.toStringify() method and
return that string to your .NET code. Then you can decode that string
into a .NET object with something like JSON.net. See this MSDN link
for more information.
(https://msdn.microsoft.com/en-us/library/ie/cc836459(v=vs.94).aspx)
有关详细信息，请参阅：
https://github.com/cefsharp/CefSharp/wiki/Frequently-asked-questions
nxuybcbkbcbggkcwcbregrwyywbrgewbyrewyreyrwebyrwrwe 测试
Browser.ExecuteScriptAsync();
发送 javascript 并在 return 中不期望任何内容，因此尝试将 'nothing'（即无效）分配给 HtmlElement 变量是不行的。
如果您希望发送 javascript 的页面并使用返回的内容，则需要使用 EvaluateScriptAsync()
这将 return 一个 Task<JavascriptResponse>，如果您试图将它分配给 Size，它仍然无法工作。坏消息是：JavascriptResponse 只能是基本数据类型（int、bool、string 等）。根据他们的文档：
Only trivial values can be returned (like int, bool, string etc) - not a complex (user-defined) type which you have defined yourself. This is because there is no (easy) way to expose a random Javascript object to the .NET world, at least not today. However, one possible technique is to turn the Javascript object you wish to return to your .NET code into a JSON string with the Javascript JSON.toStringify() method and return that string to your .NET code. Then you can decode that string into a .NET object with something like JSON.net. See this MSDN link for more information. (https://msdn.microsoft.com/en-us/library/ie/cc836459(v=vs.94).aspx)
有关详细信息，请参阅： https://github.com/cefsharp/CefSharp/wiki/Frequently-asked-questions