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<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
<title>Document</title>
</head>
<body>
<script>
//三位数
var a = parseInt(prompt("随便来三个数"));
var b =a;
var c =Math.floor(a/10);
var d =Math.floor(a/100);
var f =b+c+d;
alert(f)
//还是三位数
var g = parseInt(prompt("再随便来三个数"));
var h =a;
var i =Math.floor(a/10);
var j =Math.floor(a/100);
alert(j+","+i+","+h)
</script>
</body>
</html>
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