js模块化编码

var modula1 = (function() {
var a = "innerParam"; //内置参数，外部读取不到
function f1(x) {
x += '内置函数，外部不可调用';
console.log(x);
};
var f2 = function() {
f1(a);
console.log("返回这个函数")
};
var f3 = function() {
console.log('shuibianxiexie');
}
return {
f2: f2,
f3: f3
}
})();


modula1.f2(); //调用


//实现继承
var modula2 = (function(mode) {
var F = function(){};
F.prototype = mode;
F.prototype.constructor = F;
var fexaml = new F();
return fexaml;
})(modula1);


modula2.f4 = function(){
console.log("这是新增函数");
}
console.log(modula2);
modula2.f3();


//外部js调用时，可借助nodeJs或者requireJs