JavaScript Form Part 5

Code

<script language="javascript">

function xyz(){
var username = document.frm.username.value;
var password = document.frm.password.value;
var cnfpass = document.frm.cnfpass.value;

if(username.length<6 || username.length >12){
//document.write("Username should be within 6 to 12 character");
document.getElementById('err').innerHTML = "Username should be within 6 to 12 character";

}
if(password!=cnfpass){
//document.write("Password and confirm password should be same");
document.getElementById('err_pass').innerHTML = "Password and confirm password should be same";

}
}


</script>

<form name="frm" id="frm">

<label>User Name</label>
    <input type="text" name="username" id="username" />
    <span id="err"></span>
    <br>
    <label>Password</label>
    <input type="password" name="password" id="password" />
    <span id="err_pass"></span>
    <br>
    <label>Confirm Password</label>
    <input type="password" name="cnfpass" id="cnfpass" />
    <br>
    <input type="button" value = "Check" onClick="xyz()"
   
   

</form>