index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" href="style.css">
    <title>Password Hidder</title>
</head>
<body>
    <div class="container">
        <input type="password" placeholder="Enter Password" id="input">
        <img src="eye-icons/eye-close.png" id="img">
    </div>
</body>
<script>
    const inputBox = document.getElementById("input");
    const img = document.getElementById("img");

    img.onclick = function toggleEye(){
        if(inputBox.type == "password"){
            inputBox.type = "text";
            img.src = "eye-icons/eye-open.png";
        }
        else{
            inputBox.type = "password";
            img.src = "eye-icons/eye-close.png";
        }
    }
</script>
</html>