javascript - JS 有语法错误

Question

self.sortDeadlineFwdLive = function () {
self.deadline_fwd_lives.sort(function (left, right) {
    if (left.penalty_due_date() || right.penalty_due_date()) {
        if (left.penalty_due_date() == right.penalty_due_date()) {
            return left.returned_date() == right.returned_date() ? 0 : ((left.returned_date() && left.returned_date() < right.returned_date()) || !right.returned_date() ? -1 : 1);
        }
        return left.fl_due_date() == right.fl_due_date() ? 0 : ((left.fl_due_date() && left.fl_due_date() < right.fl_due_date()) || !right.fl_due_date() ? -1 : 1);
    }
    return left.penalty_due_date() == right.penalty_due_date() ? 0 : ((left.penalty_due_date() && left.penalty_due_date() < right.penalty_due_date()) || !right.penalty_due_date() ? -1 : 1);
} else if (left.fl_due_date() == right.fl_due_date()) {
    if (left.penalty_due_date() != right.penalty_due_date()) {
        return left.returned_date() == right.returned_date() ? 0 : ((left.returned_date() && left.returned_date() < right.returned_date()) || !right.returned_date() ? -1 : 1);
    }
    return left.fl_due_date() == right.fl_due_date() ? 0 : ((left.fl_due_date() && left.fl_due_date() < right.fl_due_date()) || !right.fl_due_date() ? -1 : 1);
} else {
    return left.returned_date() == right.returned_date() ? 0 : ((left.returned_date() && left.returned_date() < right.returned_date()) || !right.returned_date() ? -1 : 1);

}
});
};

上面是我的js函数的代码，但是我无法得到它，已经尝试了几个小时，仍然无法弄清楚，我对js很糟糕，任何善良的灵魂都可以解决它，也许只是语法错误

<强> Fiddle

Answer 1

您缺少 if (left.penalty_due_date() || right.penalty_due_date()) { 之前的起始 if 子句。