display douban rating and link in e commercial websites' book page, supports jd.com, tmall.com, dangdang.com and amzon.cn..
// ==UserScript==
// @name Douban Rating
// @namespace http://your.homepage/
// @version 0.1
// @description display douban rating and link in e commercial websites' book page, supports jd.com, tmall.com, dangdang.com and amzon.cn..
// @author You
// @match *://item.jd.com/*
// @match *://detail.tmall.com/*
// @match *://product.dangdang.com/*
// @match *://www.amazon.cn/*
// @grant none
// @require http://code.jquery.com/jquery-1.8.2.js
// ==/UserScript==
function addGlobalStyle(css) {
var head, style;
head = document.getElementsByTagName('head')[0];
if (!head) { return; }
style = document.createElement('style');
style.type = 'text/css';
style.innerHTML = css;
head.appendChild(style);
}
$(document).ready(function(){
addGlobalStyle (
'#douban-rating { \
font-family: "Helvetica Neue","Hiragino Sans GB","Microsoft Yahei","微软雅黑",Tahoma,Arial,Simhei,STXihei,"华文细黑",sans-serif; \
display: inline-block; \
margin-left: 20px; \
font-size: 14px; \
padding: 0; \
/* color: red; */ \
position: relative; \
/* color: #b5621b; */ \
} \
\
#douban-rating .douban-score { \
font-family: "Microsoft Yahei"; \
color: red; \
font-weight: 400; \
} \
#douban-rating .douban-score em { \
color: red; \
font-size: 20px; \
}'
);
});
String.format = function(src){
if (arguments.length === 0) return null;
var args = Array.prototype.slice.call(arguments, 1);
return src.replace(/\{(\d+)\}/g, function(m, i){
return args[i];
});
};
/*
* test if the current url belongs to specified site.
* you can specify multiple keywords, eg: is_site("sina", "jd", "taobao")
*/
var is_site = function() {
var parts = window.location.hostname.split(".");
for (var i=0; i<arguments.length; i++) {
if (parts.indexOf(arguments[i]) >= 0) {
return true;
}
}
return false;
};
var get_douban_info = function(isbn, callback) {
if (isbn === null) {
return;
}
var https = (window.location.protocol == "https:");
var api_url = null;
if (https) {
api_url = "https://api.douban.com/v2/book/isbn/" + isbn;
} else {
api_url = "http://api.douban.com/v2/book/isbn/" + isbn;
}
$.getJSON(api_url+"?callback=?", function(data){
var douban_url = data["alt"];
var douban_rank_info = data["rating"];
var average_rating = data["rating"]["average"];
var main_score = parseInt(average_rating);
var sub_score = average_rating.split(".")[1];
var num_raters = data["rating"]["numRaters"];
//console.log(douban_url, average_rating, num_raters);
var html = String.format("<div id=\"douban-rating\"><b>豆瓣评分：</b><span class=\"douban-score\"><em>{1}</em>.{2}</span>分 (<a href=\"{0}\" target=\"_blank\">{3}人评价</a>)</div>", douban_url, main_score, sub_score, num_raters);
callback(html);
}).fail(function(jqxhr, textStatus, error){
var html = null;
if (jqxhr.status == 404) {
html = "<span id=\"douban-rating\"><b>豆瓣评分：</b>豆瓣上没有这本书. </span>";
} else {
html = String.format("<span id=\"douban-rating\"><b>豆瓣评分：</b>ajax错误({0}). </span>", jqxhr.status);
}
callback(html);
});
};
var insert_rating_to_jd = function(html) {
var obj = $(html);
$("#p-author").append(obj);
};
var insert_rating_to_amazon = function(html) {
var obj = $(html);
$("#productGuarantee_feature_div").after(obj);
};
var insert_rating_to_dangdang = function(html) {
var obj = $(html);
$("#comm_num_up").after(obj);
};
var insert_rating_to_tmall = function(html) {
var obj = $(html);
$("#J_PostageToggleCont").after(obj);
};
var get_jd_isbn = function(){
var keywords = $('meta[name=keywords]').attr("content");
var isbn_regex = /\d{10,13}/;
var ret = keywords.match(isbn_regex);
if (ret != null) {
return ret[0];
} else {
var text = $("#parameter2").text();
var ret = text.match(isbn_regex);
if (ret == null) {
return null;
}
return ret[0];
}
};
var get_amazon_isbn = function(){
var isbn = null;
var text = $("#detail_bullets_id").text();
var ret = text.match(/\d{10,13}/);
if (ret != null) {
isbn = ret[0];
}
return isbn;
};
var get_dangdang_isbn = function() {
var keywords = $('meta[name=keywords]').attr("content");
var isbn_regex = /\d{10,13}/;
var ret = keywords.match(isbn_regex);
if (ret != null) {
return ret[0];
} else {
var text = $(".book_messbox").text();
var ret = text.match(isbn_regex);
if (ret == null) {
return null;
}
return ret[0];
}
};
var get_tmall_isbn = function() {
var isbn = null;
var text = $("#J_AttrUL").text();
var ret = text.match(/\d{10,13}/);
if (ret != null) {
isbn = ret[0];
}
return isbn;
};
$(document).ready(function(){
var isbn = null;
if (is_site("jd", "360buy")) {
isbn = get_jd_isbn();
get_douban_info(isbn, insert_rating_to_jd);
} else if (is_site("amazon", "z")) {
isbn = get_amazon_isbn();
get_douban_info(isbn, insert_rating_to_amazon);
} else if (is_site("dangdang")) {
isbn = get_dangdang_isbn();
get_douban_info(isbn, insert_rating_to_dangdang);
} else if (is_site("tmall")) {
isbn = get_tmall_isbn();
get_douban_info(isbn, insert_rating_to_tmall);
}
});