扩展js对象数组的OrderByAsc和OrderByDesc方法实现思路

Array.prototype.OrderByAsc = function (func) { 
var m = {}; 
for (var i = 0; i < this.length; i++) { 
for (var k = 0; k < this.length; k++) { 
if (func(this[i]) < func(this[k])) { 
m = this[k]; 
this[k] = this[i]; 
this[i] = m; 
} 
} 
} 
return this; 
} 
Array.prototype.OrderByDesc = function (func) { 
var m = {}; 
for (var i = 0; i < this.length; i++) { 
for (var k = 0; k < this.length; k++) { 
if (func(this[i]) > func(this[k])) { 
m = this[k]; 
this[k] = this[i]; 
this[i] = m; 
} 
} 
} 
return this; 
} 
 
调用的方法如下： 
 代码如下:

var arr = [{ name: 'aaa', grade: 20 }, { name: 'ccc', grade: 30 }, { name: 'bbb', grade: 40 }]; 
var orderArr = arr.OrderByDesc(function (a) { 
return a.grade; 
}); 
 
然后
输出一下，看一下结果吧： 
 代码如下:

for (var i = 0; i < orderArr.length; i++) { 
document.write(orderArr[i].name); 
} 
 
本人js菜鸟，如果有什么想法啥的，直接留言，相互交流一下