根据对象中某个属性值对其进行排序

var array = [
    {name: ‘a‘, hp: 100},
    {name: ‘b‘, hp: 2},
    {name: ‘d‘, hp: 3},
    {name: ‘m‘, hp: 7},    
    {name: ‘c‘, hp: 4},
    {name: ‘e‘, hp: 4}
]
array.sort(getSortFun(‘desc‘, ‘hp‘));
function getSortFun(order, sortBy) {
    var ordAlpah = (order == ‘asc‘) ? ‘>‘ : ‘<‘;
    var sortFun = new Function(‘a‘, ‘b‘, ‘return a.‘ + sortBy + ordAlpah + ‘b.‘ + sortBy + ‘?1:-1‘);
    return sortFun;
}
alert(JSON.stringify(array.slice(0, 3)));