<script language="javaScript">
function pass() {
old_pass = document.getElementById("old_pass").value;
new_pass = document.getElementById("new_pass").value;
new_pass2 = document.getElementById("new_pass2").value;
if (old_pass == "") {
msg = "旧密码不得为空!";
var ch = document.getElementById("old_pass");
} else if (new_pass == "") {
msg = "新密码不得为空!";
var ch = document.getElementById("new_pass");
} else if (new_pass.length < 6) {
msg = "新密码不能小于6个字符,请重新输入!";
var ch = document.getElementById("new_pass");
} else if (new_pass != new_pass2) {
msg = "2次密码输入不一致!";
var ch = document.getElementById("new_pass2");
}
ch.innerHTML = msg;
return false;
}
</script>
<table width="99%" border="0" cellpadding="0" cellspacing="1">
<tr>
<td width="30%" height="30" bgcolor="#FFFFFF">
<div align="right" class="STYLE2 STYLE1">
请输入旧密码:
</div>
</td>
<td width="30%" bgcolor="#FFFFFF">
<input name="old_pass" type="password" id="old_pass" size="20" onBlur="return pass();"
/>
<span id="old_pass">
</span>
</td>
<td width="39%" bgcolor="#FFFFFF">
</td>
</tr>
<tr>
<td width="30%" height="30" bgcolor="#FFFFFF">
<div align="right" class="STYLE2 STYLE1">
请输入新密码:
</div>
</td>
<td width="30%" bgcolor="#FFFFFF">
<input name="new_pass" type="password" id="new_pass" size="20" onBlur="return pass();"
/>
<span id="new_pass">
</span>
</td>
<td width="39%" bgcolor="#FFFFFF">
</td>
</tr>
<tr>
<td width="30%" height="30" bgcolor="#FFFFFF" bgcolo r="#FFFFFF">
<div align="right" class="STYLE2 STYLE1">
请再次输入新密码:
</div>
</td>
<td width="30%" bgcolor="#FFFFFF">
<input name="new_pass2" type="password" id="new_pass2" size="20" onBlur="return pass();"
/>
<span id="new_pass2">
</span>
</td>
<td width="39%" bgcolor="#FFFFFF">
</td>
</tr>
</table>
function pass() {
old_pass = document.getElementById("old_pass").value;
new_pass = document.getElementById("new_pass").value;
new_pass2 = document.getElementById("new_pass2").value;
if (old_pass == "") {
msg = "旧密码不得为空!";
var ch = document.getElementById("old_pass");
} else if (new_pass == "") {
msg = "新密码不得为空!";
var ch = document.getElementById("new_pass");
} else if (new_pass.length < 6) {
msg = "新密码不能小于6个字符,请重新输入!";
var ch = document.getElementById("new_pass");
} else if (new_pass != new_pass2) {
msg = "2次密码输入不一致!";
var ch = document.getElementById("new_pass2");
}
ch.innerHTML = msg;
return false;
}
</script>
<table width="99%" border="0" cellpadding="0" cellspacing="1">
<tr>
<td width="30%" height="30" bgcolor="#FFFFFF">
<div align="right" class="STYLE2 STYLE1">
请输入旧密码:
</div>
</td>
<td width="30%" bgcolor="#FFFFFF">
<input name="old_pass" type="password" id="old_pass" size="20" onBlur="return pass();"
/>
<span id="old_pass">
</span>
</td>
<td width="39%" bgcolor="#FFFFFF">
</td>
</tr>
<tr>
<td width="30%" height="30" bgcolor="#FFFFFF">
<div align="right" class="STYLE2 STYLE1">
请输入新密码:
</div>
</td>
<td width="30%" bgcolor="#FFFFFF">
<input name="new_pass" type="password" id="new_pass" size="20" onBlur="return pass();"
/>
<span id="new_pass">
</span>
</td>
<td width="39%" bgcolor="#FFFFFF">
</td>
</tr>
<tr>
<td width="30%" height="30" bgcolor="#FFFFFF" bgcolo r="#FFFFFF">
<div align="right" class="STYLE2 STYLE1">
请再次输入新密码:
</div>
</td>
<td width="30%" bgcolor="#FFFFFF">
<input name="new_pass2" type="password" id="new_pass2" size="20" onBlur="return pass();"
/>
<span id="new_pass2">
</span>
</td>
<td width="39%" bgcolor="#FFFFFF">
</td>
</tr>
</table>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
</head><body>
<script type="text/javascript">
function pass() {
old_pass = document.getElementById("old_pass").value;
new_pass = document.getElementById("new_pass").value;
new_pass2 = document.getElementById("new_pass2").value;
var ch="";
if (old_pass == "") {
msg = "旧密码不得为空!";
ch = document.getElementById("old_pass12");
} else if (new_pass == "") {
msg = "新密码不得为空!";
ch = document.getElementById("new_pass12");
} else if (new_pass.length < 6) {
msg = "新密码不能小于6个字符,请重新输入!";
ch = document.getElementById("new_pass21");
} else if (new_pass != new_pass2) {
msg = "2次密码输入不一致!";
ch = document.getElementById("new_pass21");
}
ch.innerHTML = msg;
return false;
}
</script>
<table width="99%" border="0" cellpadding="0" cellspacing="1">
<tr>
<td width="30%" height="30" bgcolor="#FFFFFF">
<div align="right" class="STYLE2 STYLE1">
请输入旧密码:
</div>
</td>
<td width="30%" bgcolor="#FFFFFF">
<input name="old_pass" type="password" id="old_pass" size="20" onBlur="return pass();"
/>
<span id="old_pass12">
</span>
</td>
<td width="39%" bgcolor="#FFFFFF">
</td>
</tr>
<tr>
<td width="30%" height="30" bgcolor="#FFFFFF">
<div align="right" class="STYLE2 STYLE1">
请输入新密码:
</div>
</td>
<td width="30%" bgcolor="#FFFFFF">
<input name="new_pass" type="password" id="new_pass" size="20" onBlur="return pass();"
/>
<span id="new_pass12">
</span>
</td>
<td width="39%" bgcolor="#FFFFFF">
</td>
</tr>
<tr>
<td width="30%" height="30" bgcolor="#FFFFFF" bgcolo r="#FFFFFF">
<div align="right" class="STYLE2 STYLE1">
请再次输入新密码:
</div>
</td>
<td width="30%" bgcolor="#FFFFFF">
<input name="new_pass2" type="password" id="new_pass2" size="20" onBlur="return pass();"
/>
<span id="new_pass21">
</span>
</td>
<td width="39%" bgcolor="#FFFFFF">
</td>
</tr>
</table>
</body>
</html>
这样试试
各个dom的id不要重了 还有变量的作用域
<input name="old_pass" type="password" id="old_pass" size="20" onBlur="return pass();"
/>
<span id="old_pass">id重复,document.GetElementById("old_pass") 选择的是 input。input 不支持,innerHTML方法
if (old_pass == "") {
msg = "旧密码不得为空!";
var ch = document.getElementById("old_pass");
} else if (new_pass == "") {
msg = "新密码不得为空!";
var ch = document.getElementById("new_pass");
} else if (new_pass.length < 6) {
msg = "新密码不能小于6个字符,请重新输入!";
var ch = document.getElementById("new_pass");
} else if (new_pass != new_pass2) {
msg = "2次密码输入不一致!";
var ch = document.getElementById("new_pass");
}
ch.innerHTML = msg;
return false;msg 是全局变量。就算最后全部通过。页面还是会出现值。function pass() 中 var msg 一下;