First of all download attached resource and
unzip it.
Here is a code in script, which check validation and username and password.
<script type="text/javascript">
var count = 2;
function validate() {
var un = document.myform.username.value;
var pw = document.myform.pword.value;
var valid =
false;
var unArray = ["admin",
"George", "Sarah",
"Michael"]; // as many as you like - no comma after final entry
var pwArray
= ["test1234",
"Password2", "Password3",
"Password4"]; // the corresponding passwords;
for (var
i = 0; i < unArray.length; i++) {
if ((un == unArray[i]) && (pw ==
pwArray[i])) {
valid = true;
break;
}
}
if (valid) {
alert("Login was successful");
window.location = "welcome.htm";
return
false;
}
var t = "
tries";
if (count == 1) { t =
" try" }
if (count >= 1) {
alert("Invalid username and/or password.
You have " + count + t + " left.");
document.myform.username.value = "";
document.myform.pword.value = "";
setTimeout("document.myform.username.focus()",
25);
setTimeout("document.myform.username.select()",
25);
count--;
}
else {
alert("Still incorrect! You have no more
tries left!");
document.myform.username.value = "No more
tries allowed!";
document.myform.pword.value = "";
document.myform.username.disabled = true;
document.myform.pword.disabled = true;
return
false;
}
}
</script>
Here "var count = 2;" counts that how many try remain for and if its goes to
"0", you are not allow to try any more.
Here is a form for User name and password.
<form name="myform" style="padding-left:
50px">
<p>
<input type="text" name="username" placeholder="User
Name"><br>
<input type="password" name="pword" placeholder="Password"><br>
<input type="button" value="Login" name="Submit" onclick="validate()">
</p>
</form>