Finds and logs ISBN numbers from the current webpage
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// ==UserScript==
// @name Douban2ZJUlib
// @namespace https://book.douban.com/subject/36099425/
// @author AlainAllen
// @description Finds and logs ISBN numbers from the current webpage
// @match http://book.douban.com/subject/*
// @match https://book.douban.com/subject/*
// @version 0.2
// @grant GM_xmlhttpRequest
// @license MIT
// ==/UserScript==
(function() {
'use strict';
// Function to find the last ISBN in the element with ID 'info'
function findLastISBNInElement(elementId) {
var element = document.getElementById(elementId);
if (element) {
var isbnPattern = /(\d{0,3}-?\d{1,5}-?\d{1,7}-?\d{1,7}-?[\dX])/g; // Pattern to match ISBN
var matches = element.innerText.match(isbnPattern);
if (matches && matches.length > 0) {
var lastIsbn = matches[matches.length - 1];
console.log('ISBN on douban:', lastIsbn);
return lastIsbn;
} else {
console.log('ISBN not found');
return null;
}
} else {
console.log('Element with ID ' + elementId + ' not found');
return null;
}
}
// Function to check the ISBN by forming a URL and loading it
function checkISBN(isbn) {
if (isbn) {
var baseUrl = 'https://opac.zju.edu.cn/F/76UDUNXYY3Q54I9H9PHNMHPCSKVN5EA4ABM8PAG46YSP8HTFCN-12474?find_base=ZJU01&find_base=ZJU09&func=find-m&find_code=ISB&request='; // Base URL
var checkUrl = baseUrl + isbn.replace(/-/g, ''); // Remove hyphens from ISBN
GM_xmlhttpRequest({
method: 'GET',
url: checkUrl,
onload: function(response) {
// Success checking part
var isbnRegex = /ISBN(?:-1[03])?:?\s*(\d{0,3}-?\d{1,5}-?\d{1,7}-?\d{1,7}-?[\dX])/g;
var allIsbnMatches = response.responseText.match(isbnRegex);
if (allIsbnMatches && allIsbnMatches.length > 0) {
// Get the last ISBN from the matches
var lastIsbn = allIsbnMatches[allIsbnMatches.length - 1];
console.log("Last ISBN found: " + lastIsbn);
// Append the checked URL to the 'info' part of Douban
appendLinkToInfo(checkUrl);
} else {
console.log("No ISBN found.");
}
}
});
} else {
console.log('No ISBN provided to check.');
}
}
// Function to append the checked URL to the 'info' part of Douban
function appendLinkToInfo(url) {
var infoElement = document.getElementById('info');
if (infoElement) {
var link = document.createElement('a');
var span = document.createElement('span');
span.className = 'pl';
span.textContent = '图书馆:';
infoElement.appendChild(span);
link.href = url;
link.textContent = '馆藏链接';
infoElement.appendChild(link);
} else {
console.log('Info element not found on Douban page.');
}
}
// Example usage
var lastIsbn = findLastISBNInElement('info');
checkISBN(lastIsbn);
})();