📄 js20.html
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<html>
<head>
<!-- js-20 表单验证-1 -->
<script>
function check(){
var result = true;
var name = document.form1.usrname.value;
var pwd = document.form1.pwd.value;
var pwdConfirm = document.form1.pwdConfirm.value;
if(name.length<2 || name.length>8){
result=false;
alert("用户名2-8位");
}
if(pwd.length<6 || pwdConfirm<6){
result=false;
alert("密码大于6位");
}
if(pwdConfirm!=pwd){
result=false;
alert("密码须一致");
}
return result;
}
</script>
</head>
<body>
<form action="" onSubmit="return check();"
name="form1">
<table height="8%">
<tr><td></td></tr>
</table>
<table align="center" >
<tr align="center"
bgcolor="#E4E4E4">
<td colspan="2">注册页面</td>
</tr>
<tr>
<td align="right">用户名:</td>
<td>
<input type="text" name="usrname" />
</td>
</tr>
<tr>
<td align="right">密码:</td>
<td>
<input type="password" name="pwd" />
</td>
</tr>
<tr>
<td align="right">确认密码:</td>
<td>
<input type="password" name="pwdConfirm" />
</td>
</tr>
<tr>
<td align="right">性别:</td>
<td>
男<input type="radio" name="gender"
value="male" checked/>
女<input type="radio" name="gender"
value="female"/>
</td>
</tr>
<tr>
<td align="right">学历:</td>
<td>
<select name="xl">
<option value="cz">初中
<option value="gz">高中
<option value="dz">大专
<option value="db">大本
<option value="yjs">研究生
</select>
</td>
</tr>
<tr>
<td align="right">自我介绍:</td>
<td>
<textarea name="selfintro"
cols="16"></textarea>
</td>
</tr>
<tr>
<td align="right">兴趣:</td>
<td>
游泳<input type="checkbox" name="hobby"
value="swiming"/>
读书<input type="checkbox" name="hobby"
value="reading"/>
美食<input type="checkbox" name="hobby"
value="food"/>
</td>
</tr>
<tr align="center" bgcolor="#E4E4E4">
<td colspan="2">
<input type="submit" />
</td>
</tr>
</table>
</form>
</body>
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