Question

58

Cant call Javascript function from button onclick event ASP.NET 4

rated 0 times [ 63] [ 5] / answers: 1 / hits: 78064 / 13 Years ago, mon, september 19, 2011, 12:00:00

when ever i call a JavaScript function from asp:button onclick event i got this error message

HTML

<asp:Button ID=btnFromCalOpen runat=server Text= &gt;   onclick=ShowCal()  CssClass = SElementHide />

Javascript

function ShowCal() {



    var elem = document.getElementById('MainContent_CalendarFrom');

    if (elem.visibility = hidden )

    {

    elema.style.visibility = visible;

    elema.style.display = block;

    }

    else

    {

    elema.style.visibility = hidden;

    elema.style.display = none;

    }

}

Error
Compiler Error Message: BC30456: 'ShowCal' is not a member of 'ASP.default_aspx'.

Please Help

Answers

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margob

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4 Years ago

answered 13 Years ago loganl · Accepted Answer

Use OnClientClick to have your ASP.NET button run a JavaScript method before calling its server-side method. OnClick specifies the server side method to run.

<asp:Button ID=btnFromCalOpen runat=server 

         Text= &gt;   CssClass = SElementHide 

         OnClientClick=ShowCal() />