Calling a jQuery user defined function from Silverlight

Question

I have this:

(function ($) {
  var myObj = {
    callMe: function (msg) {
      console.log(msg);
    }
  }
})(jQuery);

and I would like to call the callMe function from Silverlight.

This does not seem to work:

ScriptObject jsObject = (ScriptObject)HtmlPage.Window.GetProperty("callMe");
jsObject.InvokeSelf('This is a message');

How would I go about exposing the callMe function so that I can Invoke it from Silverlight?

Answer: (since I don't have enough rep I have to answer here)

Tomalak, you pointed me in the right direction! It actually works both ways as long as you make it a property of the window object:

<script type="text/javascript">

    (function ($) {

        var myObj = {

            callThis:function(msg){
                console.log("Internal call:" + msg);
            }

        };
    window.myObj = myObj;

    window.callMe = function (msg) {
        console.log("External call:" + msg);
      }

    })(jQuery);
</script>

<script type="text/javascript">
    window.callMe("well, hello there...");
    window.myObj.callThis("... and hello you!");
</script>

Tomalak · Accepted Answer · 2012-03-02 09:52:00Z

1

This is impossible with your code since myObj and its contents is local to your JavaScript function.

Make it a property of the window object instead.

(function ($) {
  window.callMe = function (msg) {
    console.log(msg);
  }
})(jQuery);

edited Mar 2, 2012 at 9:52

answered Mar 2, 2012 at 8:43

Tomalak

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4 Comments

Jonah Over a year ago

That does not work. I get 'Unexpected token (' (function ($) { window.callMe: function (msg) { console.log(msg); } })(jQuery); <script type="text/javascript"> window.callMe("test"); </script>

Tomalak Over a year ago

@Jonah: Sorry, my bad. Fixed, try again.

Jonah Over a year ago

Tomalak: I've given the answer as an edit in my question. You'll be getting your points! Thanks!

Tomalak Over a year ago

@Jonah Of course it works both ways as long as you make it a property of the window object. That's the whole point. ;)

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