(function () {
    var privateNumberScriptLoaded;

    if (typeof numberScriptLoaded === "undefined") {
        // Assigning to window.numberScriptLoaded creates the global
        window.numberScriptLoaded = 1; // 1, not 0
    }
    else {
        ++numberScriptLoaded;
    }

    // Note that all `window` properties are globals,
    // so here, it works even without the prefix
    privateNumberScriptLoaded = numberScriptLoaded;
  console.log("Option 3: privateNumberScriptLoaded = " +
    privateNumberScriptLoaded);
})();


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<script src="http://static.jsbin.com/js/render/edit.js"></script>
<script>jsbinShowEdit({"root":"http://static.jsbin.com","csrf":"F2ndkMSIDAjbgAsto3d1gFGJ"});</script>
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