1.
<input type="text" name="e-mail">
这句中name不能出现“-”否则javascript中会认为是运算符，改一下：
<input type="text" name="email">
2.javascript中少了个“}”，改成这样：
<script language="javascript">
function check(){
var name=form1.name.value
var pwd=form1.pwd.value
var rpwd=form1.rpwd.value
var e_mail=form1.email.value
if (name.length >5) {
alert("昵称的长度应小于5个字符")
} else if (name.length <2) {
alert("昵称的长度应大于2")
} else if (pwd.length >20) {
alert("密码长度太长，请重新输入")
} else if (rpwd.length <6) {
alert("密码太短，账号不安全，请重新输入")
} else if (pwd != rpwd) {
alert("两次密码输入不同重新输入")
}
else {
form1.submit()
}
}
</script>
你这里面有很多错误 我给你改完了 看看吧<html>
<head>
<script>
function checkusername() {
var username = document.getElementById('username')
var usernamemsg = document.getElementById('usernamemsg')
usernamemsg.innerHTML = ''
if (username.value.length == 0) {
usernamemsg.innerHTML = '用户名不允许为空'
}
}
function checkpassword() {
var password = document.getElementById('password')
var passwordmsg = document.getElementById('passwordmsg')
passwordmsg.innerHTML = ''
if (password.value.length == 0) {
passwordmsg.innerHTML = '密码不允许为空'
} else if (password.value.length>=6&&password.value.length<=8) {
passwordmsg.innerHTML = ''
}else{
passwordmsg.innerHTML = '密码长度须在6~8位之间'
}
}
function checkrepasswords() {
var userpassword = document.f1.password.value
var userpassword2 = document.f1.repassword.value
var repasswordmsgz = document.getElementById('repasswordmsg')
repasswordmsgz.innerHTML=""
if (userpassword2==userpassword ) {
repasswordmsgz.innerHTML=""
}else{
repasswordmsgz.innerHTML="密码不一致"
}
}
</script>
</head>
<body>
<form action="#" name="f1">
<table border="0" align="center">
<tr>
<td>
用户名:
</td>
<td>
<input type="text" name="username" id="username"
onblur="checkusername()">
<span id="usernamemsg" style="color: red"></span>
</td>
</tr>
<tr>
<td>
密码:
</td>
<td>
<input type="text" name="password" id="password"
onblur="checkpassword()">
<span id="passwordmsg" style="color: red"></span>
</td>
</tr>
<tr>
<td>
重复密码：
</td>
<td>
<input type="text" name="repassword" id="repassword" onBlur="checkrepasswords()">
<span id="repasswordmsg" style="color: red"></span>
</td>
</tr>
<tr>
<td>
性别:
</td>
<td>
<input type="radio" name="gender">
男
<input type="radio" name="gender">
女
</td>
</tr>
<tr>
<td>
个人简介:
</td>
<td>
<textarea rows="5" cols="15" name="introduce">
</textarea>
</td>
</tr>
<tr>
<td>
籍贯:
</td>
<td>
<select name="jiguan">
<option value="1">
北京
</option>
<option value="2">
上海
</option>
<option value="3">
广州
</option>
</select>
</td>
</tr>
<tr>
<td>
<input type="submit" value="提交注册">
<input type="button" value="登录">
</td>
<td>
<center>
<input type="reset" value="重新注册">
</center>
</td>
</tr>
</table>
</form>
</body>
</html>
顺便说一句 只有用var userpassword = document.f1.password.value方法才能获取到密码的值
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