-2
如何创建计算税款的JSP页面?我们必须使用正则表达式来验证用户输入。提交表单后,用户将看到税额。税率根据以下税表计算。您还需要将currencySymbol="$"
添加到<fmt:formatNumber>
标记。JSTL Web应用程序开发
Total Income Tax Rate
$1 - $5000 0%
$5001 - $20000 5%
$20001 and above 7%
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt"%>
<html>
<head><title>Assignment One - Queston 4</title>
<script type="text/javascript">
function verify() {
regExp = /\d+\b/;
if (!(regExp.test(thisForm.income.value))) {
alert("You must enter valid income amount!");
return false;}
return true;
}
</script>
</head>
<body>
<fmt:setLocale value="en-US" />
<c:set var="amount" value="${param.income}" />
<c:if test='${empty param.income}'>
<c:set var="amount" value="0"/>
</c:if>
<b>Enter the amount of total income for this year:</b>
<form name="thisForm" action="Q4.jsp" method="post"
onsubmit="return verify();">
Amount of sales:<input name=income size=10 value="?"> <br/><br/>
<input type=submit value="Calculate Tax">
</form>
<%-- Put Code to calculate the tax here --%>
</body>
</html>
以上是当前代码我现在有。有人能帮我吗?