<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<input type="" name="" id="f0" value="" />
<input type="button" name="" id="f1" value="金额" />
<script type="text/javascript">
var oF1 = document.getElementById("f1");
oF1.onclick = function(){
var oF0 = document.getElementById("f0").value;
alert(Number(oF0)*1.05+"美元");
}
</script>
</body>
</html>