<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>无标题文档</title>
</head>
<script src="java.inc.bag/jquery-1.9.1.js"></script>
<body>
<span>原价</span><input type="text" id="money" /><br>
<span>折扣</span><input type="text" id="discount" /><br>
<span>单价</span><div id="result" style="display:inline"></div>
</body>
</html>
<script>
function a(){alert("d")}
$("input").keyup(function(e) {
var money = Number($("#money").val());
var discount = Number($("#discount").val());
if(money && discount){
if(discount <= 100 && discount >= 0){
$("#result").html("￥"+(money*discount/100))
}
}
});
</script>
