// ==UserScript==
// @name        武汉理工大学教务管理网站页面计算某一学年的绩点。
// @namespace    http://tampermonkey.net/
// @version      1.5
// @description  挺方便的
// @author       guo
// @include      http://202.114.50.130/Score/*
// @match        http://202.114.50.130/Score/*
// @grant        unsafeWindow
// @downloadURL none
// ==/UserScript==
var buttonTr=$('body');
$(buttonTr).append('<div id="gpa" ><input id="point" type="button" value="计算某学年绩点" onclick="whutgpa()" "/></div>');
$('#gpa').css({"position":"absolute","z-index": "999999"});
//css.textContent="#gpa{border-left-width: 2px ;margin-left: 700px;margin-top: 10px;position:absolute;z-index: 999999; background-color: #b5c1d0;color: #cd3a3a}";
$("#point").css({"border-left-width": "2px" ,"margin-left": "650px","margin-top": "40px","background-color": "#b5c1d0","color":" #cd3a3a"});

unsafeWindow.whutgpa=function(){
    var id=$("#undefined");
    var tr=$(id).find("tr");
    var creditSum=0;//学分总和
    var pointMulCreditSum=0;//学分*绩点总和
    var allYear=prompt("请输入计算学年","");
    $(tr).each(
        function(key,param){
            var year=$(param).children('td').eq(0).find("div").html();
            
            //var reg = RegExp(//);
            if(year.indexOf(allYear)>=0){
            var credit= $(param).children('td').eq(5).find("div").html();//每门课的学分
            var point=$(param).children('td').eq(13).find("div").html();//每门课的绩点
            if(Number(point)!=0){
              creditSum+=Number(credit);
              pointMulCreditSum+=Number(credit)*Number(point);
            }

            }
        })
    if(allYear!=null){
        alert("总学分："+creditSum);
        alert("学分*绩点总和："+pointMulCreditSum);    
        var gpa=pointMulCreditSum/creditSum;
        alert("绩点："+gpa);

        var kexue=((gpa-1)*10+60)*0.7;
        alert("科学文化素质"+kexue);
    }
};