Javascript数组按姓氏，名字排序

Question

I have the following array in JavaScript, I need to sort them by last name.

var names = [Jenny Craig, John H Newman, Kelly Young, Bob];

Results would be:

Bob, 
Jenny Craig, 
John H Newman, 
Kelly Young 

Any examples on how to do this?

Answer 1

Try this:

function compare(a, b) {
    var splitA = a.split(" ");
    var splitB = b.split(" ");
    var lastA = splitA[splitA.length - 1];
    var lastB = splitB[splitB.length - 1];

    if (lastA < lastB) return -1;
    if (lastA > lastB) return 1;
    return 0;
}

var names = ["John H Newman", "Jenny Craig", "Kelly Young", "Bob"];
var sorted = names.sort(compare);
console.log(sorted);

Here's a Fiddle .

Answer 2

function lastNameSort(a,b) {
    return a.split(" ").pop()[0] > b.split(" ").pop()[0]
};
names.sort(lastNameSort);

This was inspired by this answer .