Javascript alert

Post by HelloThere » Fri Aug 04, 2017 11:45 AM

Hi !

We have a lot of PDF file that using the Alert Javascript function to notify users about validations (Ex : Wrong date format).

Is there a way to catch somewhere if Alert, Beep or call refering to app variable is been throwed ?

Thanks !

JP

Re: Javascript alert

Post by Alex » Fri Aug 04, 2017 04:26 PM

Hello,

We have a lot of PDF file that using the Alert Javascript function to notify users about validations (Ex : Wrong date format).
Is there a way to catch somewhere if Alert, Beep or call refering to app variable is been throwed ?

Yes, you can catch when the alert function is called in JavaScript code of PDF document. For doing this you need override the "alert" method in WinFormsPdfJsApp class:
https://www.vintasoft.com/docs/vsimagin ... alert.html

For evaluating the functionality in our PDF Editor Demo you need do the following steps:

Open PDF Editor Demo in Visual Studio
Open file "PdfDemosCommonCode\DemosCommonCode.Pdf\JavaScript\PdfViewerJsApp.cs" in project PdfDemosCommonCode

Override the alert method in PdfViewerJsApp class:

public override int alert(string cMsg, int nIcon, int nType, string cTitle, PdfJsDoc oDoc)
{
    ...
}

Run PDF Editor Demo
Open PDF document, which calls the alert function in JavaScript code

Best regards, Alexander

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