<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
<script src="${pwd }/js/jquery-1.11.0.js"></script>
<script type="text/javascript">
/* function submitForm() {
var name = $("#name");
var msg = "";
if ($.trim(name.val()) == "") {
msg = "姓名不能为空！";
name.focus();
alert("姓名不能为空！");
return false;
}
$("#goodsForm").submit();
} */
$(function(){
/** 员工表单提交 */
$("#goodsForm").submit(function(){
var name = $("#name");
var price = $("#price");
var num = $("#num");
var goodsid = $("#goodsid");
var msg = "";
if ($.trim(name.val()) == ""){
msg = "姓名不能为空！";
name.focus();
alert(msg);
}
if (msg != ""){
return false;
}else{
return true;
}
$("#goodsForm").submit();
});
});
</script>
</head>
<body>
<form action="/goods/test" id="goodsForm" name="goodsForm"
method="post">
<!-- 隐藏表单，flag表示添加标记 2 是添加数据 -->
<input type="hidden" name="flag" value="2">
<table>
<tr>
<td class="font3 fftd">商品名：<input type="text" name="name"
id="name" size="20" />
</td>
</tr>
<tr>
<td class="main_tdbor"></td>
</tr>
<tr>
<td align="left" class="fftd">
<input type="submit" id="submitbutton" onclick="" value="添加">
<input type="reset" value="取消 "></td>
</tr>
</table>
</form>
</body>
</html>
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
<script src="${pwd }/js/jquery-1.11.0.js"></script>
<!-- <script language="javascript">
function print(){
var a=myform.name.value;
alert(a);
}
</script> -->
<script type="text/javascript">
function submitForm() {
var name = $("#name");
var msg = "";
if ($.trim(name.val()) == "") {
msg = "姓名不能为空！";
name.focus();
alert("姓名不能为空！");
return false;
}
$("#goodsForm").submit();
}
</script>
</head>
<body>
<form action="/goods/test" id="goodsForm" name = "goodsForm" method="post">
<!-- 隐藏表单，flag表示添加标记 2 是添加数据 -->
<input type="hidden" name="flag" value="2">
<table width="100%" border="0" cellpadding="0" cellspacing="10"
class="main_tab">
<tr>
<td class="font3 fftd">
<table>
<tr>
<td class="font3 fftd">商品名：<input type="text" name="name"
id="name" size="20" />
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td class="main_tdbor"></td>
</tr>
<tr>
<td align="left" class="fftd">
<input type="button" id="submitbutton" onclick="submitForm()" value="添加"> <input
type="reset" value="取消 "></td>
</tr>
</table>
</form>
</body>
</html>
原文：https://www.cnblogs.com/zhumengdexiaobai/p/10170352.html