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// ==UserScript==
// @require https://code.jquery.com/jquery-3.6.0.min.js
// @name pkuElective自动翻页
// @version 0.1
// @description no description
// @author test12345
// @match https://elective.pku.edu.cn/elective2008/edu/pku/stu/elective/controller/supplement/*
// @grant none
// @license MIT
// @namespace test12345
// ==/UserScript==
'use strict';
const headersOfCurrentPage = Object.fromEntries(new Map(document.location.search.slice(1).split('&').map(x => x.split('='))));
const studentId = headersOfCurrentPage.xh;
async function main(){
const electiveTable = $("table.datagrid")[0];
const tableHeader = electiveTable.children[0].children[0];
function parseTable(table){
const linesInTable = Array.prototype.slice.call(table.children[0].children);
const pageInformation = linesInTable.at(-1).children[0].childNodes[0].data.split(' '); // ['Page', '*', 'of', '*']
return {
pageId: parseInt(pageInformation[1]),
pageNumber: parseInt(pageInformation[3]),
content: linesInTable.slice(1,-2),
}
}
const pageNumber = parseTable(electiveTable).pageNumber;
let allPageTableBody = Array(pageNumber), promiseList = [];
for(let i=0;i<pageNumber;++i){
promiseList.push(
$.get(`https://elective.pku.edu.cn/elective2008/edu/pku/stu/elective/controller/supplement/supplement.jsp?netui_pagesize=electableListGrid%3B20&xh=${studentId}&netui_row=electableListGrid%3B` + (20*i))
.done((data) => {
const parsedTable = parseTable($('table.datagrid',data)[0]);
allPageTableBody[parsedTable.pageId - 1] = parsedTable.content;
})
);
}
await Promise.all(promiseList);
$(electiveTable).html('<table><tbody>' + '<tr class="datagrid-header">' + $(tableHeader).html() + '</tr>' +
allPageTableBody.flat().map((x, index) => `<tr class="${(index & 1)? 'datagrid-odd' : 'datagrid-even'}">` + $(x).html() + '</tr>').join('') +
'</table></tbody>');
};
main();