How to set javascript variables using MVC4 with Razor

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You should take a look at the output that your razor page is resulting. Actually, you need to know what is executed by server-side and client-side. Try this:

@{
    int proID = 123; 
    int nonProID = 456;
}

<script>

    var nonID = @nonProID;
    var proID = @proID;
    window.nonID = @nonProID;
    window.proID = @proID;

</script>

The output should be like this:

enter image description here

Depending what version of Visual Studio you are using, it point some highlights in the design-time for views with razor.

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