<%
String a1 =""
String a2 = ""
long s = 0
a1 = request.getParameter("a1")
a2 = request.getParameter("a2")
String outs=""
if(a1!=null &&!a1.trim().equals("") &&a2!=null &&!a2.trim().equals("")){
try{
s = Long.parseLong(a1)+Long.parseLong(a2)
outs = String.valueOf(s)
}catch(Exception ex){
}
}
if(a1==null||a2==null) {
a1 =""
a2 = ""
}
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>max</title>
<meta http-equiv="Content-Type" content="text/htmlcharset=gb2312" />
</head>
<body>
<form name="form1" action="" method="post">
<input type="text" name="a1" id="a1" value="<%=a1%>"/>+
<input type="text" name="a2" id="a2" value="<%=a2%>"/>=
<input type="text" name="s" id="s" value="<%=outs%>"/>
<input type="submit" name="submit1" value="计算"/>
</form>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><%
String a1 =""
String a2 = ""
long s = 0
a1 = request.getParameter("a1")
a2 = request.getParameter("a2")
String outs=""
if(a1!=null &&!a1.trim().equals("") &&a2!=null &&!a2.trim().equals("")){
try{
s = Long.parseLong(a1)+Long.parseLong(a2)
outs = String.valueOf(s)
}catch(Exception ex){
outs="您输入的不是有效数字!"
}
}
if(a1==null||a2==null) {
a1 =""
a2 = ""
}
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>max</title>
<meta http-equiv="Content-Type" content="text/htmlcharset=gb2312" />
</head>
<body>
<form name="form1" action="" method="post">
<input type="text" name="a1" id="a1" value="<%=a1%>"/>+
<input type="text" name="a2" id="a2" value="<%=a2%>"/>=
<input type="text" name="s" id="s" value="<%=outs%>"/>
<input type="submit" name="submit1" value="计算"/>
</form>
</body>
</html>
<script type="text/javascript">function fn(act){
var val = document.getElementById("num").value
if(act.equals('jia')){
val = val-1
}else{
val = val+1
}
}
</script>
<table>
<tr>
<td><input type="text" id="num" value="<%=i%>"/><td>
</tr>
<tr>
<td>
<input type="button" id="btn1" value="+" onclick="fn(jia)"/> <input type="button" id="btn2" value="-" onclick="fn(jian)"/>
</td>
</tr>
</table>
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