How can I use masking on a password field

Question

0.00/5 (No votes)

See more:

I got a code for multi user login page. Everything is OK here but when I provide password, it is showing the text. Usually as a password field it will be masked. Can anyone help me by editing the following code.
Thanks in advance.
Arifin

What I have tried:

HTML

<script language="javascript" type="text/javascript">
<!-- Begin
function LogIn(){
loggedin=false;
username="";
password="";
username=prompt("Username:","");
username=username.toLowerCase();
password=prompt("Password:","");
password=password.toLowerCase();
if (username=="guest" && password=="login") {
loggedin=true;
window.location="home-page.html";
}
if (username=="guest2" && password=="login2") {
loggedin=true;
window.location="home-page2.html";
}
if (loggedin==false) {
alert("Invalid login!");
}
}
// End -->
</script>
<center>
<form><input type=button value="Login!" onClick="LogIn()"></form>
</center>

Posted 6-Feb-23 22:33pm

Range Courier

Updated 6-Feb-23 22:47pm

Richard Deeming

v2

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Richard Deeming · Answer 1 · 2023-02-06T22:47:00

prompt[^] is a very limited API which instructs the browser to display a message and ask the user to enter some text. There is no way to "mask" the text that is entered.

Rather than using such a clunky script, use a proper login form - use an <input>[^] for both the username and the password, with type="password" for the password input.

HTML

<form>
    <p>
        <label for="username">Username:</label>
        <input type="text" size="20" name="username" id="username">
    </p>
    <p>
        <label for="password">Password:</label>
        <input type="password" size="20" name="password" id="password">
    </p>
</form>
<script>
document.querySelector("form").addEventListener("submit", e => {
    e.preventDefault();
    
    const username = document.getElementById("username").value.toLowerCase();
    const password = document.getElementById("password").value; /* Passwords should be case-sensitive */
    if (username === "guest" && password === "login") {
        location = "home-page.html";
    } else if (username === "guest2" && password === "login2") {
        location = "home-page2.html";
    } else {
        alert("Invalid login!");
    }
});
</script>

NB: This is not even remotely secure. The end user can simply view the source of the page to learn the credentials, or even navigate directly to the "protected" pages. If this is meant to be a real application, and not a learning exercise, then you have a lot of work to do.