JS小白求解为什么lable标签的值页面下没改变
日期：2014-05-17 浏览次数：20565 次
JS小白求解为什么lable标签的值页面上没改变
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<script src="js/jquery-1.4.1.min.js" type="text/javascript"></script>
<script type="text/javascript" language="javascript">
function Regs() {
var uName = document.getElementById("txtUserName").value;
var uPwd = document.getElementById("txtPwd").value;
var NameMeg = document.getElementById("LbNameMeg");
var PwdMeg = document.getElementById("LPwdMeg");
if (uName != "" && uPwd != "") {
document.getElementById("LbNameMeg").display = "none";
document.getElementById("LPwdMeg").display = "none";
}
else {
if (uName == "") {
NameMeg.value = "*用户名不能为空！";
NameMeg.style.display = "block";
}
if (uPwd == "") {
PwdMeg.value = "*密码不能为空！";
PwdMeg.style.display = "block";
}
}
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<table>
<tr>
<td colspan="3">
<h2>
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<script src="js/jquery-1.4.1.min.js" type="text/javascript"></script>
<script type="text/javascript" language="javascript">
function Regs() {
var uName = document.getElementById("txtUserName").value;
var uPwd = document.getElementById("txtPwd").value;
var NameMeg = document.getElementById("LbNameMeg");
var PwdMeg = document.getElementById("LPwdMeg");
if (uName != "" && uPwd != "") {
document.getElementById("LbNameMeg").display = "none";
document.getElementById("LPwdMeg").display = "none";
}
else {
if (uName == "") {
NameMeg.value = "*用户名不能为空！";
NameMeg.style.display = "block";
}
if (uPwd == "") {
PwdMeg.value = "*密码不能为空！";
PwdMeg.style.display = "block";
}
}
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<table>
<tr>
<td colspan="3">
<h2>
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