如何从JSON中的键值获取最少的元素？

Question

假设我有以下Json对象。

{
    "orderId": ["80055517"],
    "orderItemId": [
        "850057658",
        "850057657",
        "850057656"
        ]
}

现在我想从orderitemId获得最小值，即850057656。

Answer 1

假设您没有排序orderItemId。您可以使用以下内容获得结果。

var obj = {
    "orderId": ["80055517"],
    "orderItemId": [
        "850057658",
        "850057657",
        "850057656"
        ]
};

console.log(obj.orderItemId.sort()[0]);

Answer 2

var a = {
    "orderId": ["80055517"],
    "orderItemId": [
        "850057658",
        "850057657",
        "850057656"
    ]
};

alert(a.orderItemId[a.orderItemId.length-1]);