看完《javascript语言精粹》中的array.sort(comparefn)一节（Page81），很有启发性，于是自己试着实现这样一个通用函数by：无论数组对象为何种类型，调用此函数就能实现人们一般认知意义上的排序。
函数写完，发现没有起作用，debug了好久，最后还是决定求助SF的各位了！

	var by = function (name,minor){
		return function (a,b){
			var objBy =  function (a,b){
				var aValue,bValue;			
				aValue = a[name];
				bValue = b[name];
				if (aValue === bValue){
					return typeof minor === 'function' ? minor(a,b) : 0;
				}
				if (typeof aValue === typeof bValue){
					return aValue < bValue ? -1 : 1;
				}	
				return typeof aValue < typeof bValue ? -1 : 1;		
			}
			var generalBy  = function (a,b){
				if (a === b){
					return 0;
				}
				if (typeof a === 'string' && typeof b === 'string'){
					return a.localeCompare(b);
				}
				if (typeof a === typeof b){
					return a < b ? -1 : 1;
				}	
				return typeof a < typeof b ? -1 : 1;	
			}
			
			if (a && b && typeof a ==='object' && typeof b === 'object'){			
				return objBy;
			
			}
			return generalBy;	
			
			
		}
		
	
	}

	
        //test	
	var arry1 = [8,90,10,2,100,34,35,12];
	var arry2 = [4,20,10,34,"hello word","杀星","my god","哈哈哈","高级编程","爱情","四货","一个人" ,"大人"];
	var arry3 = [{name:"maggie",sex:"famale",age:43},{name:"gino",sex:"male",age:28},{name:"laura",sex:"famale",age:20},{name:"tino",sex:"male",age:25},{name:"amy",sex:"famale",age:27}];
	
	console.log(arry1.sort(by()));
	console.log(arry2.sort(by()));
	console.log(arry3.sort(by('sex',by('age'))));