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SUSTech GPA plugin
// ==UserScript==
// @name SUSTech_GPA
// @author Edwardfang
// @namespace http://github.com/edwardfang/sustech_gpa
// @description SUSTech GPA plugin
// @match *://jwxt.sustc.edu.cn/jsxsd/kscj/cjcx_list
// @match *://jwxt.sustc.edu.cn/jsxsd/framework/main.jsp
// @match *://jwxt.sustc.edu.cn/jsxsd/framework/xsMain.jsp
// @require https://cdn.staticfile.org/jquery/1.12.4/jquery.min.js
// @version 0.3.3
// @run-at document-end
// ==/UserScript==
function getTableData(){
const userful_columns = ['等级制', '学分']
const mapping = {'等级制':'grade', '学分':'credit'}
let myRows = [];
let $headers = $("table#dataList th");
let $rows = $("table#dataList tbody tr").each(function(index) {
$cells = $(this).find("td");
myRows[index] = {};
$cells.each(function(cellIndex) {
if ($headers[cellIndex].children.length == 1) {
myRows[index]['select'] = $(this).find("input").eq(0).prop("checked");
}else{
column_name = $($headers[cellIndex]).html();
if (userful_columns.includes(column_name)) {
myRows[index][mapping[column_name]] = $(this).html();
}
}
});
});
return myRows.slice(1);
};
function updateGPA(){
const GPA_mapping_rules = {'A+':4, 'A':3.94, 'A-':3.85,
'B+':3.73, 'B':3.55, 'B-':3.32,'C+':3.09, 'C':2.78,
'C-':2.42,'D+':2.08, 'D':1.63, 'D-':1.15, 'F':0};
let data = getTableData();
const reducer = (info, cur) =>{
// console.log(info);
// console.log(cur);
if (cur['grade'] != 'P' && cur['select'] == true) {
let credit = parseInt(cur['credit']);
info['total_credits'] += credit;
info['total_points'] += GPA_mapping_rules[cur['grade']]*credit;
}
return info;
}
let init_info = {'total_credits': 0, 'total_points':0};
let info = data.reduce(reducer, init_info)
let final_gpa = info['total_points']/info['total_credits'];
final_gpa = final_gpa.toFixed(2);
$("p#gpa").text(`Selected GPA is ${final_gpa}.`);
// console.log(final_gpa)
//alert("Selected GPA is 4.0!");
};
function loadInGradePage(){
$("table#dataList").find('th').eq(2).after('<th>\
<input id="checkAll" type="checkbox" checked/>All</th>');
$("table#dataList").find('th').eq(3).css("width", "40px");
$('table#dataList').find('tr').each(function(){
$(this).find('td').eq(2).after('<td><input name="subBox" \
type="checkbox" checked /></td>');
});
$("#checkAll").click(function() {
$('input[name="subBox"]').prop("checked",this.checked);
updateGPA();
});
let $subBox = $("input[name='subBox']");
$subBox.click(function(){
$("#checkAll").attr("checked",$subBox.length == $("input[name='subBox']:checked").length ? true : false);
updateGPA();
});
$("table#dataList").before("<p id='gpa'>Selected GPA is</p>" );
$("p#gpa").css("font-size", '20px').css('color', 'red');
updateGPA();
}
function loadInIndexPage(){
$("div.block10tex").text("GPA 查询");
$("div.block10").parent().eq(0).attr('href', '/jsxsd/kscj/cjcx_list')
}
$(function(){
let pathname = window.location.pathname;
if (pathname == '/jsxsd/kscj/cjcx_list') {
loadInGradePage();
}else if(pathname == '/jsxsd/framework/main.jsp' ||
pathname == '/jsxsd/framework/xsMain.jsp'
){
loadInIndexPage();
}
});