对比两个对象不同的方法

var a;
function machobj(obj,obj2){
    a=0;
    matchobj2(obj,obj2);
 return a;
}
function matchobj2(obj,obj2){
    if(!obj && typeof(obj)!="undefined" && obj!=0){
        obj={};
    }
    if(!obj2 && typeof(obj2)!="undefined" && obj2!=0){
        obj2={};
    }
    if(obj.length!=obj2.length){
        a++;
    }else{
        for(key in obj){
            console.log(key,typeof (obj[key]));
            if(typeof(obj[key])=='object'){
                matchobj2(obj[key],obj2[key]);
            } else{
                if(obj[key]!=obj2[key]){
                    a++;
                }
            }
        }
    }
};
console.log(machobj(obj,obj2));
console.log(machobj(obj,obj2));