JavaScript计算n的阶乘
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<html >
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<script>
function jiecheng(n){
if(n==1){
return n
}else{
return(n*(n-1))
}
}
console.log(jiecheng(3))
</script>
</body>
</html>