Executing JavaScript in a specific client application

If you want to customize your scripting depending on the particular client application in which the form or Guide is being viewed, you can use the name property of the host model to conditionalize your scripts. For example, the following JavaScript executes only if the form is rendered as a Guide:

if (xfa.host.name == "Flash") 
{ 
    xfa.host.messageBox("This is executing in Flash Player!"); 
}

Similarly, the following JavaScript executes only if the form is rendered in HTML format (and the form is viewed in Internet Explorer):

if (xfa.host.name == "IE") 
{ 
    xfa.host.messageBox("This is executing in Internet Explorer!"); 
}

If you want to distinguish between Firefox and Safari, you can use the standard HTML object model to access the window.navigator.userAgent property. The userAgent property returns a string that should contain the name of the application. For example, for Firefox 2.0.0.13 the userAgent property contains the following value:

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.13) Gecko/20080311 Firefox/2.0.0.13

The following JavaScript uses the String.search() method to determine if the value of userAgent contains either Firefox or Safari, and displays a customized message box for each case.

    var sVar = window.navigator.userAgent; 
 
    if (xfa.host.name == "Netscape") 
    { 
        if (sVar.search(/FireFox/) != -1) 
        { 
            xfa.host.messageBox("This is executing in Mozilla Firefox!"); 
        } 
        if (sVar.search(/Safari/) != -1) 
        { 
            xfa.host.messageBox("This is executing in Apple Safari!"); 
        } 
    }

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