Javascript松散增强和全局导入

Question

我尝试将松散增强与全局导入相结合，我无法使其工作，我理解（我认为）松散增强和全局导入的工作方式，但我如何将它们合二为一？ 我想做的更多的是我想在匿名函数中使用jquery。

var zet = (function (z, $) {
    z.test = function(){
        console.log("test");
    }
    z.jqtest = function(classs){
        $("."+classs).css('backgaround','red');
    }
    return z;
}(zet || {}, jQuery));
zet.test(); 
zet.jqtest("a"); // this is the part at the bottom of the dom after it loaded, but not taking     effect and no error is shown, and yes i do have jquery loaded at the top of the dom    

帮助？