https://news.infoseek.co.jp/pc/js/login_check-1.4.js

1$(function () {
2
3    const userBox = $('#userBox');
4    const loginBox = $('#loginBox');
5    const checkRelative = $('#checkRelative');
6
7    const requestUrl = (checkRelative.attr('isRelativeUrl'))
8        ? '/login/check/ajax/'
9        : 'https://news.infoseek.co.jp/login/check/ajax/';
10
11    function loginCheck() {
12        $.ajax({
13            url: requestUrl,
14            method: 'GET',
15            xhrFields: {
16                withCredentials: true
17            },
18        }).done(function (result) {
19            // 1 === user is log in
20            // 2 === user is log out
21            // 3 === user session was revoked
22
23            // 3が返って来た場合OmniログアウトURLに遷移させる
24            if (result[0] === '3') {
25                location.href = result[1];
26            }
27
28            if (result[0] === '1') {
29                userBox.show();
30            } else {
31                loginBox.show();
32            }
33        }).fail(function () {
34            loginBox.show();
35        })
36    }
37
38    loginCheck();
39});