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京东(jd.com)单价助手，增加了商品列表显示单价(每公斤/升价格)功能，帮助你在京东(jingdong)找到最划算的商品
当前为
// ==UserScript==
// @name 京东单价助手
// @namespace http://greasyfork.org/
// @version 1.14
// @description 京东(jd.com)单价助手，增加了商品列表显示单价(每公斤/升价格)功能，帮助你在京东(jingdong)找到最划算的商品
// @author Yarmu
// @match *://search.jd.com/*
// @match *://list.jd.com/*
// @match *://item.jd.com/*
// @grant none
// @supportURL http://greasyfork.icu/zh-CN/scripts/30522-%E4%BA%AC%E4%B8%9C%E5%8D%95%E4%BB%B7%E5%8A%A9%E6%89%8B
// ==/UserScript==
(function() {
var host = window.location.host.toLowerCase();
if (host === 'list.jd.com' || host === 'search.jd.com') {
addPriceTipListener('.p-price', addListPriceTip, 1000);
} else if (host === 'item.jd.com') {
addPriceTipListener('.p-price', addItemPriceTip);
addPriceTipListener('.p-price-plus', addItemPriceTip);
}
})();
function addPriceTipListener(tag, func, time) {
var onModifiedFunc = function() {
$(this).unbind("DOMSubtreeModified");
func.call(this);
$(this).bind("DOMSubtreeModified", onModifiedFunc);
};
var eachCallFunc = function() {
$(tag).each(function() {
if (!$(this).attr('priceTip')) {
$(this).attr('priceTip', '1');
onModifiedFunc.call(this);
}
});
};
eachCallFunc();
if (time) {
setInterval(eachCallFunc, time);
}
}
function addListPriceTip() {
//处理plus价格的情况
addPlusListPriceTip.call(this, '.price-plus-1');
addPlusListPriceTip.call(this, '.price-sams-1');
//处理列表价格
var priceItem = $(this).find('strong i');
var price = getFloat(priceItem.text());
if (isNaN(price)) {
//处理广告和推广价格
priceItem = $(this).find('strong span');
price = getFloat(priceItem.text());
if (isNaN(price)) {
priceItem = $(this).find('strong');
price = getFloat(priceItem.text());
if (isNaN(price)) {
priceItem = $(this);
price = getFloat(priceItem.text());
}
}
}
if (isNaN(price)) return;
var title = null;
var index = 0;
$(this).parent().find('.p-scroll .ps-wrap .ps-main .ps-item a').each(function(idx) {
if ($(this).attr('class') === 'curr' && $(this).attr('title')) {
title = $(this).attr('title').trim();
index = idx;
return false;
}
});
var unit = getUnit(title, price);
if (unit === null && index === 0) {
title = $(this).parent().find('.p-name a em').text().trim();
if (!title) {
title = $(this).parent().find('.p-name a').text().trim();
}
unit = getUnit(title, price);
}
if (unit === null) return;
var htm = ' (' + unit.price + '/' + unit.unit + ')';
title = '( 助手估重: ' + unit.capacity + unit.unit + ' = ' + unit.tip + ' )\n' + title;
priceItem.append(htm);
$(this).attr('priceCapacity', unit.capacity);
$(this).attr('priceUnit', unit.unit);
addPlusListPriceTip.call(this, '.price-plus-1');
addPlusListPriceTip.call(this, '.price-sams-1');
var tipItem = $(this).parent().find('.p-name a');
setTimeout(function() {
tipItem.attr('title', title);
}, 1000);
}
function addPlusListPriceTip(tag) {
var plusItem = $(this).find(tag);
if (plusItem.length === 0) return;
var priceItem = plusItem.find('em');
var price = getFloat(priceItem.text());
if (isNaN(price)) return;
var cap = parseFloat($(this).attr('priceCapacity'));
if (isNaN(cap)) return;
var unit = $(this).attr('priceUnit');
price = Math.round(parseFloat(price) / cap * 100) / 100;
var htm = ' (' + price + '/' + unit + ')';
plusItem.insertAfter($(this));
plusItem.css({'display':'block'});
priceItem.append(htm);
}
function addItemPriceTip() {
var priceItem = $(this).find('.price');
var price = getFloat(priceItem.text());
if (isNaN(price)) return;
var title = $('.sku-name').text().trim();
var unit = getUnit(title, price);
if (unit === null) return;
var htm = ' (' + unit.price + '/' + unit.unit + ')';
title = ' ( 助手估重: ' + unit.capacity + unit.unit + ' = ' + unit.tip + ' )';
priceItem.append(htm);
if (!window.hasAddItemPriceTip) {
window.hasAddItemPriceTip = true;
setTimeout(function() {
$('#summary-weight .dd').append(title);
$('#summary-weight').css({'display':'block'});
}, 1000);
}
}
function getUnit(title, price) {
if (!title) return null;
if (price <= 0) return null;
//处理包含：的情况
if (title.indexOf('：') != -1){
var titles = title.split('：');
for (var t=0; t<titles.length; ++t) {
var res = getUnit(titles[t], price);
if (res) return res;
}
}
var regQuant = "个只瓶罐听桶条提卷包袋件盒箱组串副份双对块束杯枚枝根片盆盘碗粒颗管支批";
var regWeigh = "g|kg|ml|l|千克|克|斤|公斤|毫升|升";
var regFloat = "\\d+\\.?\\d*?(?:\\s*-\\s*\\d+\\.?\\d*?)?";
//处理有总重量的情况
var reg0 = new RegExp('(?:[总净]重量?约?|\\s约)\\s*('+regFloat+')\\s*('+regWeigh+')');
var pos0 = {i: 0, pCap: 1, pUnit: 2, pCount: 3};
//处理数量前置的情况
var reg1 = new RegExp('\\b(\\d+)\\s*['+regQuant+']?\\s*[*x×'+regQuant+']\\s*('+regFloat+')\\s*('+regWeigh+')', 'ig');
var pos1 = {i: 1, pCap: 2, pUnit: 3, pCount: 1};
//处理数量后置的情况
var reg2 = new RegExp('\\b('+regFloat+')\\s*('+regWeigh+')(?:\\s*\\/?[\\u4e00-\\u9fa5]*)((?:\\s*[*x×'+regQuant+']\\s*\\d+[\\u4e00-\\u9fa5]?)*)', 'ig');
var pos2 = {i: 2, pCap: 1, pUnit: 2, pCount: 3};
var reg, pos;
//处理有括号的情况
var name = title.replace(/[(（【][^)）】]+?(\)|）|】|$)/g, '');
if (reg0.test(title)) {
name = title; reg = reg0; pos = pos0;
} else if (reg1.test(name)) {
reg = reg1; pos = pos1;
} else if (reg2.test(name)) {
reg = reg2; pos = pos2;
} else if (reg1.test(title)) {
name = title; reg = reg1; pos = pos1;
} else {
name = title; reg = reg2; pos = pos2;
}
//处理有赠送的情况
var isOnlyOne = !/[+＋送和]/i.test(name);
var match = null;
var cap = 0, count = 0, lastMul = 1;
var un = '', tip = '';
reg.lastIndex = 0;
while ((match = reg.exec(name))) {
var capacity;
var caps = match[pos.pCap].split('-');
if (caps.length == 2) {
capacity = (parseFloat(caps[0].trim()) + parseFloat(caps[1].trim()))/2;
} else {
capacity = parseFloat(match[pos.pCap].trim());
}
if (match.length > 3 && match[pos.pCount]) {
var multiple = match[pos.pCount].match(/\d+/g);
if (multiple) for (var i=0; i<multiple.length; ++i) {
lastMul = parseInt(multiple[i]);
capacity *= lastMul;
}
}
if (capacity <= 0) {
continue;
}
var unit = match[pos.pUnit].toLowerCase();
if (unit === 'g' || unit === '克') {
capacity /= 1000;
unit = 'kg';
} else if (unit === '千克' || unit === '公斤') {
unit = 'kg';
} else if (unit === '斤') {
capacity /= 2;
unit = 'kg';
} else if (unit === 'ml' || unit === '毫升') {
capacity /= 1000;
unit = 'L';
} else if (unit === 'l' || unit === '升') {
unit = 'L';
}
if (un === '' || un === unit) {
//处理重复出现的情况
if (isOnlyOne) {
if (capacity > cap) {
tip = ''; cap = 0; count = 0;
} else {
continue;
}
}
un = unit;
tip += match[0] + ' ';
cap += capacity;
++count;
}
}
//处理数量在其他位置的情况
if (count == 1 && pos.i !== 0) {
var regZhn = '两一二三四五六七八九十';
var regMul = '(?:[^*x×满\\d])\\s*(\\d+|['+regZhn+'])['+regQuant+'](?!\\d+折)';
reg = new RegExp(regMul, 'i');
match = reg.exec(title);
if (match) {
var mul = regZhn.indexOf(match[1]);
if (mul == -1) mul = parseInt(match[1]);
else if (mul === 0) mul = 2;
if (lastMul != mul) {
cap *= mul;
tip += match[0].substr(1, match[0].length-1).trim();
}
}
}
if (cap > 0) return {
capacity: Math.round(cap * 10000) / 10000,
unit: un,
price: Math.round(parseFloat(price) / cap * 100) / 100,
tip: tip.trim()
};
else return null;
}
function getFloat(str) {
str = str.replace('￥','').trim();
if (!/^\d+\.?\d*$/.test(str)) return NaN;
return parseFloat(str);
}