When using "自动查询" + "自动提交" on 12306, frequently it pops out the auto commit window with zero ticket left. This is extremely distracting when trying to buy ticket for New Year Festival. Because You have to close the window, which waste your precious seconds, You cannot wait in peace for true tickets to come out, but have to be frequently disrupte…

12306_cancel_zero_ticket.js

function check_auto_buy() {
    if (!$('#content_autosubmitcheckticketinfo').is(':visible')) {
        // auto buy ticket window didn't show up
        return false;
    }
    
    var all_zero = true;
    $('#sy_ticket_num_id strong').each(function(i, val){
        if (0 != $(val).text()) {
            all_zero = false;
            return false;
        }
    });
    console.debug("[" + new Date() + "] " + "No tickets left?: " + all_zero);
    if (!all_zero) {
        // there is some tickets left, click buy button
        if (!$(".touclick[name=touclick-randCode_other]").is(':visible')) {
            $('#qr_submit').click();
        }
        return true;
    }
    
    // no tickets left, cancel the window
    $('#back_edit').click();
    setTimeout(function() {
        $("#query_ticket").click();
    }, 500);
    return false;
}

setInterval(check_auto_buy, 100);