WebView.InvokeScriptAsync(String, IIterable<String>) Method
Definition
Important
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Executes the specified script function from the currently loaded HTML, with specific arguments, as an asynchronous action.
public:
virtual IAsyncOperation<Platform::String ^> ^ InvokeScriptAsync(Platform::String ^ scriptName, IIterable<Platform::String ^> ^ arguments) = InvokeScriptAsync;/// [Windows.Foundation.Metadata.RemoteAsync]
IAsyncOperation<winrt::hstring> InvokeScriptAsync(winrt::hstring const& scriptName, IIterable<winrt::hstring> const& arguments);[Windows.Foundation.Metadata.RemoteAsync]
public IAsyncOperation<string> InvokeScriptAsync(string scriptName, IEnumerable<string> arguments);function invokeScriptAsync(scriptName, arguments)Public Function InvokeScriptAsync (scriptName As String, arguments As IEnumerable(Of String)) As IAsyncOperation(Of String)Parameters
- scriptName
-
String
Platform::String
winrt::hstring
The name of the script function to invoke.
A string array that packages arguments to the script function.
Returns
An asynchronous operation object from which, on successful completion, you can retrieve the string result of the script invocation (or an empty string if the result of the script is not a string).
- Attributes
Remarks
To prevent malicious code from exploiting your app, be sure to call this method to invoke only scripts that you trust.
The invoked script can return only string values. If the return value is not a string, an empty string is returned. For example, WebView.InvokeScriptAsync("eval", "1==1") returns an empty string rather than true, unless you use toString: WebView.InvokeScriptAsync("eval", "(1==1).toString()").
Your app might appear unresponsive while scripts are running. Handle the LongRunningScriptDetected event to interrupt a long-running script.