Revealing Module Pattern for JavaScript

var SiteJavascript = function () {
 
    function test() {
        alert('SiteJavascript test');
    }

    return {
        test:test
    }
};

Usage:
01 reference the script.
In an MVC page all script would be in the @section Scripts section.
<script src="~/js/siteJavascript.js" asp-append-version="true"></script>

02 initialize and call the test function
var site = SiteJavascript();
site.test();