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这已在评论中解决，因此我无法将其标记为正确。

我很确定它曾经可以工作，但是大约一年后再次打开它，现在却不行了。有谁知道为什么最后一个警报没有显示？它应该根据我的成绩计算我的津贴，最终的alrt应该给出所有个人成绩加上我的总津贴。

<head>
<script>
    //alert('loaded');
function Runme() {
    //alert("running");
    //grades.gradess.submit();
    var Mathematics = Number(grades.Mathematics.value);
    var OMathematics = Number(grades.OMathematics.value);
    var Sci = Number(grades.Sci.value);
    var OSci = Number(grades.OSci.value);
    var ELA = Number(grades.ELA.value);
    var OELA = Number(grades.OELA.value);
    var SS = Number(grades.SS.value);
    var OSS = Number(grades.OSS.value);
    var Elec1 = Number(grades.Elec1.value);
    var OElec1 = Number(grades.OElec1.value);
    var Elec2 = Number(grades.Elec2.value);
    var OElec2 = Number(grades.OElec2.value);
    var Elec3 = Number(grades.Elec3.value);
    var OElec3 = Number(grades.OElec3.value);
    var Owed = 0.0;
    var outString = "";
    function Calc(n, o, name) {
    var add = 0.0;
    //alert (n + "and" + o)
        if (n >= 80) {
            add = add + 0.5;
            //alert(add + "x>80")
        }
        if (n >= 90) {
                add = add + 1.5;
            //alert(add + "x>90")
        }
        if (n >= 95) {
            add = add + 1;
            //alert(add + "x>95")
        }   
        if (n > o) {
            add = add + 0.5*(n-o);
            //alert(add + "Raised grade")
        }
        if (n < o) {
            if (o > 95) { 
                add = add - 0.25*(95-n);
                //alert(add + "lowered grade")
            }
            else if (o < 95) {
                add = add - 0.25*(o-n);
                //alert(add + "lowered grade")
            }
        }
        alert("You get $" + add + " in " + name);
        outString = " " + outString + "You get $" + add + " in " + name;
        Owed = Owed + add
    };
    Calc(Mathematics, OMathematics, "Math");
    Calc(Sci, OSci, "Science");
    Calc(ELA, OELA, "Literature");
    Calc(SS, OSS, "Social Studies/History");
    Calc(Elec1, OElec1, "Elective 1");
    Calc(Elec2, OElec2, "Elective 2");
    Calc(Elec3, OElec3, "Elective 3");
    alert("hi");
    alert(outstring + " You get $" + Owed + "!");
};
</script>
</head>
<body>
<center>
<h1>Grade Calculator</h1>
<form name="grades" action="" method="get">
<br><br>Math &nbsp &nbsp &nbsp Old Math<br><input type=number size=20 name=Mathematics> <input type=number size=20 name=OMathematics>
<br><br>Science &nbsp &nbsp &nbsp Old Science<br><input type=number size=20 name=Sci><input type=number size=20 name=OSci>
<br><br>English &nbsp &nbsp &nbsp Old English<br><input type=number size=20 name=ELA><input type=number size=20 name=OELA>
<br><br>Social Studies &nbsp &nbsp &nbsp Old Social Studies<br><input type=number size=20 name=SS>
<input type=number size=20 name=OSS>
<br><br>Elective One &nbsp &nbsp &nbsp Old Elective One<br><input type=number size=20 name=Elec1><input type=number size=20 name=OElec1>
<br><br>Elective Two &nbsp &nbsp &nbsp Old Elective Two<br><input type=number size=20 name=Elec2><input type=number size=20 name=OElec2>
<br><br>Elective Three &nbsp &nbsp &nbsp Old Elective Three<br><input type=number size=20 name=Elec3><input type=number size=20 name=OElec3>
</form>
<br/>
<input type="button" value="Submit and Calculate" onclick="Runme()"/>
</center>

</body>
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