计算在东华大学各学期选修的学分

各学期选修学分.js

if(!new RegExp('jw.dhu.edu.cn/dhu/student/query/scorequery.jsp').test(window.location)) {
    alert('You should run this on http://jw.dhu.edu.cn/dhu/student/query/scorequery.jsp');
    return;
}
var lines=[], all_trs = document.getElementsByTagName('tr');
var ignore = [/形势与政策/, /军事理论/, /学术讲座/, /课外科技活动/, /社会实践/, /军训/, /学业水平考试/];
for(var i=0; i<all_trs.length; ++i)
    if(all_trs[i].children.length==12)
        lines.push(all_trs[i]);
seme_score = [0,0,0,0,0,0,0,0,0,0,0,0];
lines.forEach(
    function(line){
        var tds=line.getElementsByTagName('td');
        for(var i=0; i<tds.length; ++i) {
            itext = tds[i].innerText;
            var should_ignore = false;
            ignore.forEach(function(patt){if(patt.test(itext)){should_ignore=true;return;}});
            if(should_ignore) return;
            if(!should_ignore && itext)
                seme_score[i]+=parseFloat(tds[3].innerText);
        }
});
headers = ['1A', '1B', '2A', '2B', '3A', '3B', '4A', '4B'];
result = [];
for(var i=4; i<seme_score.length; ++i)
    result.push(headers[i-4]+': '+seme_score[i]);
console.log(result.join('\n'));