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尝试在中亚图书页面（存在ISBN数据或者关联页面存在该数据）展示相应的豆瓣图书信息。
// ==UserScript==
// @name 亚马逊图书豆瓣助手
// @namespace http://weibo.com/maiweili/
// @version 1.1
// @description 尝试在中亚图书页面（存在ISBN数据或者关联页面存在该数据）展示相应的豆瓣图书信息。
// @author maiweili
// @match https://www.amazon.cn/*
// @grant none
// ==/UserScript==
(function() {
'use strict';
var scr=document.createElement('script');
scr.textContent='var callback;';
document.body.appendChild(scr);
var bList=Array.from(document.querySelectorAll('b'));
var isBook=bList.some(function(key){
return key.textContent.includes('出版社')||key.textContent.includes('Publisher');
});
if(isBook){
let isbnNode=bList.find(function(key){
return key.textContent =='ISBN:';
});
var isbnStr;
if(isbnNode){
let isbn=isbnNode.nextSibling.textContent.split(',')[0].trim();
getInfoBox(isbn);
} else{
let pages=document.querySelectorAll('.swatchElement .a-button-text');
if(pages.length-1){
let url=pages[pages.length-1].href;
if(url=='javascript:void(0)')
console.log('缺少ISBN信息');
else
getAjax(url);
} else
console.log('缺少ISBN信息');
}
}
function getAjax(url){
var xhr = new XMLHttpRequest();
xhr.open('GET', url);
xhr.onreadystatechange = function () {
if(xhr.readyState == 4 && xhr.status === 200) {
let hasIsbn=xhr.responseText.match(/<li><b>ISBN:<\/b>(.*)<\/li>/);
if(hasIsbn){
let isbn=hasIsbn[1].split(',')[0].trim();
getInfoBox(isbn);
} else
console.log('缺少ISBN信息');
}
};
xhr.send();
}
function getInfoBox(str){
var url='https://api.douban.com/v2/book/isbn/'+str+'?fields=id,title,subtitle,rating,origin_tilte,author,translator,publisher,pubdate,binding,pages,series,tags&callback=callback';
getJSONP(url,show);
function getJSONP(url,fnc) {
let script = document.createElement('script');
callback = function (json) {
try {
fnc(json);
} catch(e){
console.log(e);
}finally {
script.parentNode.removeChild(script);
}
};
script.src=url;
document.body.appendChild(script);
}
function show(info){
let box=document.createElement('div');
box.style='position:fixed; right:10px; bottom:10px; border:none; border-radius:0.5em; background:white; width:30em;padding:1em;';
let cButton=document.createElement('button');
cButton.innerHTML='✖';
cButton.style='position:absolute; top:0px; right:0px; border:none; background:transparent; font-size:1.5em; border-radius:0.5em';
cButton.addEventListener('click',function(){
box.style.display='none';
});
box.appendChild(cButton);
if(info.msg){
box.appendChild(document.createTextNode('没找到该图书！'));
}else{
let title;
title=info.subtitle? info.title+'：'+info.subtitle: info.title;
let header=document.createElement('h2');
header.style.marginTop='0px';
let headerLink=document.createElement('a');
headerLink.innerHTML=title;
headerLink.href = 'https://book.douban.com/subject/'+info.id;
headerLink.target='_blank_h';
header.appendChild(headerLink);
box.appendChild(header);
let rating=document.createElement('div');
rating.style.cssFloat='right';
let rn=document.createElement('p');
rn.style='font-size:3em;font-weight:bloder;color:green';
rn.innerHTML=info.rating.average;
rating.appendChild(rn);
let pn=document.createElement('p');
pn.innerHTML=info.rating.numRaters+'人评价';
rating.appendChild(pn);
box.appendChild(rating);
if(info.origin_tilte){
var originTitle=document.createElement('p');
originTitle.innerHTML=info.origin_tilte;
box.appendChild(originTitle);
}
let author=document.createElement('p');
let aun=info.author.length;
let auLinks=[];
for(let i=0;i<aun;i++){
auLinks[i]=document.createElement('a');
auLinks[i].innerHTML=info.author[i];
auLinks[i].href='https://book.douban.com/search/'+info.author[i].slice(info.author[i].indexOf(']')+1);
auLinks[i].target='_blank_au'+i;
author.appendChild(auLinks[i]);
author.appendChild(document.createTextNode('（作者）'));
}
if(info.translator.length){
let trn=info.translator.length;
let trLinks=[];
for(let i=0;i<trn;i++){
trLinks[i]=document.createElement('a');
trLinks[i].innerHTML=info.translator[i];
trLinks[i].href='https://book.douban.com/search/'+info.translator[i].slice(info.translator[i].indexOf(']')+1);
trLinks[i].target='_blank_tr'+i;
author.appendChild(trLinks[i]);
author.appendChild(document.createTextNode('（译者）'));
}
}
box.appendChild(author);
let publisher=document.createElement('p');
publisher.innerHTML=info.publisher+' '+info.pubdate+' '+info.binding+' '+info.pages+'页';
box.appendChild(publisher);
if(info.series){
let series=document.createElement('p');
series.appendChild(document.createTextNode('丛书：'));
let seLink=document.createElement('a');
seLink.innerHTML=info.series.title;
seLink.href='https://book.douban.com/series/'+info.series.id;
seLink.target='_blank_se';
series.appendChild(seLink);
box.appendChild(series);
}
let ntags=info.tags.length;
if(ntags){
let tags=document.createElement('p');
tags.appendChild(document.createTextNode('豆瓣标签'));
let taLinks=[];
for(let i=0;i<ntags;i++){
taLinks[i]=document.createElement('a');
taLinks[i].innerHTML=info.tags[i].name;
taLinks[i].href='https://book.douban.com/tag/'+info.tags[i].name;
taLinks[i].target='_blank_ta'+i;
tags.appendChild(document.createTextNode(' '));
tags.appendChild(taLinks[i]);
}
box.appendChild(tags);
}
}
Array.from(box.querySelectorAll('a')).forEach(function (k){
k.style.textDecoration='none';
});
document.body.appendChild(box);
}
}
})();