// ==UserScript==
// @name 淘宝、京东、天猫自动按每斤价格排序 TAOBAO/JD/TMALL / Automatic sort by 500g price.
// @namespace snomiao@gmail.com
// @version 0.5
// @description 自用。有疑问联系 snomiao@gmail.com 已知bug：淘宝的价格和商品标题上写的重量通常对不上，此bug无法修复，天猫、京东暂无此问题, 标题出现2个以上重量单位的按最后一个算
// @author snomiao@gmail.com
// @match http*://cart.jd.com/cart*
// @match http*://cart.jd.com/addToCart.html*
// @match http*://order.jd.com/center/alwaysbuy.action*
// @match http*://www.jd.com/*.html
// @match http*://item.jd.com/*.html
// @match http*://search.jd.com/Search*
// @match http*://list.tmall.com/search_product.htm*
// @match http*://s.taobao.com/search*
// @match http*://cart.taobao.com/cart.htm*
// @match http*://www.1688.com/
// @grant none
// ==/UserScript==
(function () {
'use strict';
// 获取质量参数
// 前缀乘数 基数量 基数单位 后缀乘数
var 求千克价格 = ({ title, price }) => {
var units = {
// 重量、容积单位（按水的重量算）
kg: 1000, 千克: 1000, l: 1000, 公斤: 1000,
g: 1, 克: 1, ml: 1,
磅: 453.59237, lb: 453.59237,
斤: 500, 两: 50,
mg: 0.001, ug: 0.000001,
// 数据单位
pb: 1000000,
t: 1000, tb: 1000,
mb: 0.001,
kb: 0.000001,
}
var reg1 = /(?:(\d+)\*)?(\d+\.\d+|\d+)(kg|g|mg|ug|L|ml|千克|克|斤|两|公斤|升|毫升|pb|tb|mb|kb|t)(?:\*(\d+))?/i
var reg2 = /(?:(\d+)\*)?(\d+\.\d+|\d+)(kg|g|mg|ug|L|ml|千克|克|斤|两|公斤|升|毫升|pb|tb|mb|kb|t)\b(?:\*(\d+))?/ig
var matches = title.match(reg2) || []
// 匹配多个价格
var vals = matches.map(match => {
match = match.match(reg1)
var mul = parseFloat(match[4] || match[1]) || 1
var val = parseFloat(match[2])
var unit = match[3].toLowerCase()
var unitMul = units[unit]
if (unitMul) {
return price / (mul * val * unitMul / 1000)
} else {
console.log(match)
return Infinity
}
})
var 挑选价格 = (vals)=>{
// 如果匹配到的价格=1个
if (vals.length == 1) return vals[0]
// 如果匹配到的价格>1个，则进行同价判断
if (vals.length > 1) {
if (vals.slice(1, -1).includes(vals[0])) return vals[0]
if (vals.slice(0, -2).includes(vals[vals.length - 1])) return vals[vals.length - 1]
}
return Infinity
}
var val = 挑选价格(vals)
console.log(title, vals, val)
return val
}
//
var 解释性价比 = (千克价格) => 千克价格 < Infinity ? parseInt(千克价格 / 2 * 100) / 100 + "¥/500g" : ""
var 映射 = (x, a, b, c, d) => (x - a) / (b - a) * (d - c) + c
var getListItems = ({ selItem, selTitle, selPrice }) => [...document.querySelectorAll(selItem)]
.map(
e => {
var eTitle = e.querySelector(selTitle)
var ePrice = e.querySelector(selPrice)
return eTitle && ePrice &&
{
eTitle, eTitle, ePrice,
title: eTitle.innerText.trim(),
price: parseFloat(ePrice.innerText.trim().replace(/￥|¥/g, "")),
e
}
}
).filter(e => e)
var 按性价比排序 = () => {
var lsItems = []
// taobao购物车
.concat(getListItems({ selItem: ".item-holder,.bundle,#J_OrderList>div", selPrice: ".td.td-price", selTitle: ".item-basic-info a" }))
// taobao
.concat(getListItems({ selItem: ".item", selTitle: ".title a", selPrice: ".price" }))
// TMALL
.concat(getListItems({ selItem: ".product", selPrice: ".productPrice", selTitle: ".productTitle a" }))
// JD
.concat(getListItems({ selItem: ".itemInfo-wrap", selTitle: ".sku-name", selPrice: ".p-price" })) // 当前浏览商品
.concat(getListItems({ selItem: "ul.more2_list>li.more2_item", selTitle: ".more2_info_name", selPrice: ".more2_info_price" })) // 首页推荐
.concat(getListItems({ selItem: ".freqt-items>.freqt-item", selTitle: ".p-name a", selPrice: ".p-price" })) // 常购商品
.concat(getListItems({ selItem: ".gl-item", selTitle: ".p-name em", selPrice: ".p-price" }))
.concat(getListItems({ selItem: ".track-con>ul>li", selTitle: "a>div", selPrice: "a>p" })) //看了又看
.concat(getListItems({ selItem: "ul.plist>li", selTitle: ".p-name", selPrice: ".p-price" })) //店铺新品、店铺热销、店长推荐等
.concat(getListItems({ selItem: "ul>li.item", selTitle: ".p-name", selPrice: ".p-price" })) // 本店好评
// JD购物车
.concat(getListItems({ selItem: ".goods-list>ul>li", selTitle: ".p-name a", selPrice: ".p-price" }))
.concat(getListItems({ selItem: ".item-item,.item-full", selTitle: ".p-name a", selPrice: ".p-price" }))
.concat(getListItems({ selItem: ".smart-items>ul>li", selTitle: ".item-name a", selPrice: ".item-price" }))
// 1688
.concat(getListItems({ selItem: ".grid.rec-offer", selTitle: ".offer_titles", selPrice: ".price-num" })) // 首页
.concat(getListItems({ selItem: ".sm-offer-item", selTitle: ".sm-offer-title", selPrice: ".sm-offer-priceNum" })) //商品搜索页面
var lsItems = lsItems.map(e => ({ ...e, 千克价格: 求千克价格(e) }))
.sort((a, b) => a.千克价格 - b.千克价格)
.map(e => { e.e.parentNode.appendChild(e.e.parentNode.removeChild(e.e)); return e })
var 最低价 = Math.min(...lsItems.map(e => e.千克价格).filter(e => e < Infinity))
var 最高价 = Math.max(...lsItems.map(e => e.千克价格).filter(e => e < Infinity))
lsItems.forEach(
e => {
var percent = 映射(e.千克价格, 最低价, 最高价, 1, 0)
var span = document.createElement("span")
span.className = "priceof500g"
// 红绿渐变，红的最低价
span.style.backgroundColor = `rgba(${percent * 255},${255 - percent * 255},0,1)`
span.style.color = "rgba(255,255,255,1)"
console.log(解释性价比(e.千克价格))
span.innerText = 解释性价比(e.千克价格);
// 移除上一次运行结果
[...e.eTitle.parentNode.querySelectorAll(".priceof500g")].map(child => e.eTitle.parentNode.removeChild(child))
// 新结果
e.eTitle.parentNode.insertBefore(span, e.eTitle)
})
}
document.addEventListener("onload", 按性价比排序)
setInterval(按性价比排序, 5000)
setTimeout(按性价比排序, 2000)
按性价比排序()
})();
