How to get the least element from the values of a key in JSON?

Question

Suppose i have following Json object.

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

Now i want the least value i.e 850057656 from orderitemId.

Answer 1

Assuming you do not have orderItemId sorted. You can get the result using following.

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]);