json对象组按某个字段排序

JS排序 键值对

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;
}
};

//JSON数据源

var obj=[

{b: '3', c: 'c'},
{b: '1', c: 'a'},
{b: '2', c: 'b'}
];
obj.sort(sortBy('b',false,parseInt));
console.log(obj);