Var Inner is being parsed before DOM ready if the script is loaded in the document head

[nikglavin]

Is there a reason these are defined before app.init as the DOM might not always be ready if the script is loaded early ?

        var inner = document.getElementById('inner-wrap'),
            nav_open = false,
            nav_class = 'js-nav';

[torkiljohnsen]

Shouldn't be an issue when the script is loaded at the end of the document? https://github.com/dbushell/Responsive-Off-Canvas-Menu/blob/master/step4.html