CarKing001 - 车王二手车残值率
// ==UserScript==
// @name CarKing001
// @namespace https://greasyfork.org/users/11909
// @description CarKing001 - 车王二手车残值率
// @include http://www.carking001.com/ershouche/*
// @version 2016.03.08.01
// @author OscarKoo
// @grant none
// ==/UserScript==
;(function($) {
var getKM = function(text) {
var km = text.substr(0, text.length - 2);
var index = km.indexOf('万');
return parseFloat(index >= 0 ? (km.substr(0, km.length - 1) * 10000) : km);
};
var getMonths = function(text) {
if (!text || text == '-') return 1;
var dates = text.split('/')
var now = new Date();
return (now.getFullYear() - parseInt(dates[0], 10)) * 12 + (now.getMonth() + 1 - parseInt(dates[1], 10));
};
var getNewPrice = function(text) {
return parseFloat(text.match(/￥(\d+\.\d*)万/)[1]);
};
var getOriginalPrice = function(text) {
return parseFloat(text.match(/新车价：(\d+\.*\d*)万/)[1]);
};
var calculate = function() {
$('ul.carList>li>.fl').each(function() {
try {
var km, months, newPrice, originalPrice, p;
$(this).children('p').filter(function(index) {
return index == 0 || index == 1;
}).each(function(index) {
switch (index) {
case 0:
var span = $(this).children('span');
km = getKM(span.eq(0).text());
months = getMonths(span.eq(1).text());
break;
case 1:
p = $(this);
var t = p.text();
newPrice = getNewPrice(t);
originalPrice = getOriginalPrice(t)
break;
}
});
var priceDiff = originalPrice - newPrice;
var rate = priceDiff / originalPrice * 100;
p.append('<span style="border-left: 1px solid #ccc;"> 差价：' + priceDiff.toFixed(4) + '万元；跌幅：' + rate.toFixed(2) + '%；年限：' + months + '月；折合：' + (rate / (months / 12)).toFixed(2) + '%/年；' + (priceDiff / months * 10000).toFixed(2) + '元/月；' + (priceDiff / km * 10000).toFixed(2) + '元/公里</span>');
} catch (e) {
console.log(e);
}
});
};
calculate();
})($);