base.js

/*genarate javascript namspace function*/
var _ns= {};
_ns.genNameSpace= function(path, loseMe){
    var reg = /^[_$a-z]+[_$a-z0-9]*/i;
    var nsAr = path.split('.');
    var stringCommond = "";
    var stringNS = "";
    var n = loseMe ? nsAr.length - 1 : nsAr.length;
    for (var i = 0; i < n; i++){
        if(!reg.test(nsAr[i])) {
            throw new Error("namespace error" + nsAr[i] + "");
            return ;
        }
        if (i != 0) stringNS += ".";
        stringNS += nsAr[i];
        stringCommond += "if(typeof(" + stringNS + ")=='undefined') " + stringNS + "=new Object();else " + stringNS + ";";
    }
    if (stringCommond != "") {
        return eval(stringCommond);
    }
    return {};
};



var _util = _ns.genNameSpace("ns.util");
(function(ns){
    ns.run = function() {
    }

    ns.baiduHmScript = function(hmId) {
        var _hmt  = _hmt || [];
        var _hmId = hmId||"";
        (function() {
            var hm = document.createElement("script");
            hm.src = "//hm.baidu.com/hm.js?"+_hmId;
            var s = document.getElementsByTagName("script")[0];
            s.parentNode.insertBefore(hm, s);
        })();
    }

})(_util);

_util.run();

login.js

//<script src="jquery.min.js" type="text/javascript"></script>
//已经手动引入jquery

//login.js文件内容
var login = _ns.genNameSpace("ns.login");
(function(ns){
    ns.run = function() {
        $('#login-btn').click(ns.doLogin);
        $('#register-btn').click(ns.doLogin);
    }
    ns.pageInit = function() {
        //page init actions 
        $('#page-tittle').html('<h1>登陆页面</h1>');
        $('body').css({background:'#F00'});
    }
    ns.doLogin = function(e) {
        var form = $(this).parents('form#login-form');
        //var username = form.find('.username').val();
        //var password = form.find('.password').val();
        $.post(form.attr('action'),form.serialize(),function(data){
            console.log(data);
        })
    }

    ns.alert = function(str) {
        var str = str||'';
        alert(str);
    }

    ns.run();
})(login);

//在页面中或者其他文件中，方法调用
login.alert('login.alert: hello!')