JS使用三元运算符判断三个数中最大的数

<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8">
        <title></title>
    </head>
    <body>
    </body>
</html>
<script type="text/javascript">
    var a = parseInt(prompt("请输入数值"));
    var b = parseInt(prompt("请输入数值"));
    var c = parseInt(prompt("请输入数值"));
    var d = (a>b?(a>c?a:c):(b>c?b:c))
    alert(d);
</script>

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