// ==UserScript==
// @name         京东秒杀价格过滤
// @namespace    http://tampermonkey.net/
// @version      0.1
// @icon         https://www.jd.com/favicon.ico
// @description  按价格过滤并排序（价格升序）秒杀商品列表
// @author       You!
// @run-at       document-end
// @match        *://miaosha.jd.com/category.html?cate_id=*
// @grant        GM_setValue
// @grant        GM_getValue
// @downloadURL none
// ==/UserScript==

GM_setValue('jd_miaosha_price_min',   0.00); //<-----------------------------------------------------------过滤价格修改这里
GM_setValue('jd_miaosha_price_max', 100.00); //<-----------------------------------------------------------过滤价格修改这里

(function() {
    var doFilter = function(){
        clearInterval(priceFilter);
        var count = 0;
        //count += filterGoods($('div.skwrap')); //正在抢购
        //count += filterGoods($('div.moregoods')); //更多好货

        count += filterGoods($('div.catinfo_seckillnow')); //当天正在秒杀的商品
        count += filterGoods($('div.catinfo_startsoon')); //明日秒杀的商品
        if (count === 0) priceFilter = setInterval(doFilter, 1000);
    };
    var filterGoods = function(goodsList) {
        var goods = goodsList.find('li.seckill_mod_goods');
        if (goods.length > 0) {
            //按价格过滤
            var niceGoods = [];
            goods.each(function(idx){
                var price = getPrice(this);
                if (priceMin <= price && price <= priceMax) niceGoods.push(this);
            });
            var count = niceGoods.length;
            if (count > 0) {
                //排序
                $(niceGoods[0].closest('ul')).empty().append(niceGoods.sort(function(g1, g2){
                    return getPrice(g1) - getPrice(g2); //<-----------------------------------------------------------如果要降序，修改这里
                }));
            }
        }
        return goods.length;
    };

    if (!location.href.match('miaosha.jd.com')) return;

    var priceMin = GM_getValue('jd_miaosha_price_min');
    var priceMax = GM_getValue('jd_miaosha_price_max');
    var priceFilter = setInterval(doFilter, 1000);
})();

function getPrice(elm) {
    return getFloat($(elm).find('i.seckill_mod_goods_price_now').first().text());
}

function getFloat(str) {
    str = str.replace('￥','').replace('¥','').trim();
    if (!/^\d+\.?\d*$/.test(str)) return NaN;
    return parseFloat(str);
}