javascript对json排序的多种方法

var obj = [
	{
		name:"xie",
		age:23
	},
	{
		name:"abort",
		age:40
	},
	{
		name:"zhu",
		age:30
	}];

	/*方法1*/
	function sortByKey(array, key) {
			return array.sort(function(a, b) {
					var x = a[key]; var y = b[key];
					return ((x < y) ? -1 : ((x > y) ? 1 : 0));
			});
	}
	console.log(sortByKey(obj,"name"));

	/*方法2*/
	var sortBy = function (filed, rev, primer) {
		rev = rev ? -1 : 1;
		return function (a, b) {
			a = a[filed];
			b = b[filed];
			if (typeof (primer) != 'undefined') {
					a = primer(a);
					b = primer(b);
			}
			if (a < b) { return rev * -1; }
			if (a > b) { return rev * 1; }
			return 1;
		}
	};
	var obj = [
		{b: '3', c: 'c'}, 
		{b: '1', c: 'a'},
		{b: '2', c: 'b'}
	],obj1 = obj.concat();
	obj.sort(sortBy('b', false, parseInt));
	console.log(obj);
	obj1.sort(sortBy('b', true, String));
	console.log(obj1);

	/*方法3*/
	var people = [
	{
		name: 'a75',
		item1: false,
		item2: false
	},
	{
		name: 'z32',
		item1: true,
		item2: false
	},
	{
		name: 'e77',
		item1: false,
		item2: false
	}];
	function sortByKey(array, key) {
		return array.sort(function(a, b) {
			var x = a[key]; var y = b[key];
			return (x < y ? -1 : ((x > y) ? 1 : 0));
		});
	}
	people = sortByKey(people, 'name');
	console.log(people);

	/*方法4*/
	var array = [
		{name: 'a', phone: 1, value: 'val_4'},
		{name: 'b', phone: 5, value: 'val_3'},
		{name: 'd', phone: 3, value: 'val_2'},
		{name: 'c', phone: 4, value: 'val_1'}
	];
	function getSortFun(order, sortBy) {
		var ordAlpah = (order == 'asc') ? '>' : '<';
		return new Function('a', 'b', 'return a.' + sortBy + ordAlpah + 'b.' + sortBy + '?1:-1');
	}
	console.log(array.sort(getSortFun('desc', 'phone')));