js 关联数组获取数组长度

//关联数组长度

function getObjLength(obj){    
        var count=0;       
        for(var name in obj){       
            if(typeof obj[name] == "object"){               
                count+=getObjLength(obj[name]);         
             }else{  
                count++;  
             }  
        }    
        return count;    
    }