Does view.postscript() allow you to call functions loaded as output scripts?

问题

I am using <xpScriptBlock> to store the contents of two rather long client side functions that loads an ExtJS grid. I can call the function using clientside javascript just fine.

I discovered that I need to show a different grid based on a condition in the underlining document. To reference the backend I moved the code to serverside and then tried to call the grid using view.postScript. This does not work and is the basis of my question.

Is this approach even possible? I do not wish to put all the code into the event. The functions are quite long and better kept in a script block for readability and maintainability. The functions are definitely loaded in the client, as I can manually load them using the firebug console. Perhaps I am missing something simple so I wanted to ask before changing my approach.

var typePO = document1.getItemValueString("typePO");
if(typePO == "AFS"){
    view.postScript("loadGridAFS();")
} else {
    view.postScript("loadGridOther();")
}

This code is in the serverside onClientLoad event of a panel. I have tried adding the 'return' keyword and it makes no difference.

UPDATE: I can't even get simple alerts to work using view.postscript(). Does this method only work in certain types of events in SSJS???

回答1:

After some experimenting using a simple alert I can say that view.postScript() does NOT work everywhere.

For a test, I put the same code in an six event of the xpage. Here is an example of the code I used: view.postScript("alert('onClientLoad');"); I just changed the message to match the event.

Here are the results:

onClientLoad = nothing
beforePageLoad = XSP error
afterPageLoad = WORKS!
afterRestoreView = nothing
beforeRenderResponse = WORKS!
afterRenderResponse = nothing

I haven't tried every available event out there, but the bottom line here is that you shouldn't count on view.postscript() to work everywhere. And if it does do nothing, try a simple alert first to see of the event supports view.postscript before questioning the client javascript code you are attempting to run.

来源：https://stackoverflow.com/questions/18408733/does-view-postscript-allow-you-to-call-functions-loaded-as-output-scripts

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