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'}

]

array.sort(getSortFun('desc', 'phone'));

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));