各位大神，菜鸡求救：
各位大神，菜鸡求救：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
</head>
<body>
</body>
<script>
var a =[{"xm":"卫伊","语文":76},
{"xm":"钱伟","语文":80},
{"xm":"张珊","语文":90},
{"xm":"李斯","语文":54},
{"xm":"王武","语文":69},
{"xm":"苏肃","语文":82},
{"xm":"陈启","语文":79}];
var b=[{"xm":"卫伊","数学":96},
{"xm":"钱伟","数学":90},
{"xm":"张珊","数学":80},
{"xm":"李斯","数学":75},
{"xm":"王武","数学":88},
{"xm":"苏肃","数学":47},
{"xm":"陈启","数学":67}];
//按总分由高到低输出结果
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