TCS-iON/Code at main · SASH-77/TCS-iON · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Captcha Form</title>
    <style>
        * {
            margin:0px;
            padding:0px;
            box-sizing:border-box;
        }
        body {
            font-family:"Roboto", sans-serif;
            background:#f5f5f5;
        }
        .login-form {
            position:absolute;
            top:50%;
            left:50%;
            transform:translate(-50%, -50%);
            width:90%;
            max-width:450px;
            background:#fff;
            padding:20px 30px;
            box-shadow:0px 5px 10px rgba(0,0,0,0.1);
        }
        .login-form .form-title {
            font-family: "Montserrat", sans-serif;
            text-align:center;
            font-size:30px;
            font-weight:600;
            margin:20px 0px 30px;
            color:#111;
        }
        .login-form .form-input {
            margin:10px 0px;
        }
        .login-form .form-input label,
        .login-form .captcha label {
            display:block;
            font-size:15px;
            color:#111;
            margin-bottom:5px;
        }
        .login-form .form-input input {
            width:100%;
            padding:10px;
            border:1px solid #888;
            font-size:15px;
        }
        .login-form .captcha {
            margin:15px 0px;
        }
        .login-form .captcha .preview {
            color:#555;
            width:100%;
            text-align:center;
            height:40px;
            line-height:40px;
            letter-spacing:8px;
            border:1px solid #888;
            font-family:"monospace";
        }
        .login-form .captcha .captcha-form {
            display:flex;
        }
        .login-form .captcha .captcha-form input {
            width:100%;
            padding:8px;
            border:1px solid #888;
        }
        .login-form .captcha .captcha-form .captcha-refresh {
            width:40px;
            border:none;
            outline:none;
            background:#888;
            color:#eee;
            cursor:pointer;
        }
        .login-form #login-btn {
            margin-top:5px;
            width:100%;
            padding:10px;
            border:none;
            outline:none;
            font-size:15px;
            text-transform:uppercase;
            background:#4c81ff;
            color:#fff;
            cursor:pointer;
        }
    </style>
</head>
<body>
    <div class="login-form">
        <div class="form-title">Member Login</div>
        <div class="form-input">
            <label for="username">Username</label>
            <input type="text" id="username">
        </div>
        <div class="form-input">
            <label for="password">Password</label>
            <input type="password" id="password">
        </div>
        <div class="captcha">
            <label for="captcha-input">Enter Captcha</label>
            <div class="preview"></div>
            <div class="captcha-form">
                <input type="text" id="captcha-input" placeholder="Enter captcha text">
                <button class="captcha-refresh"><i class="fa fa-refresh"></i></button>
            </div>
        </div>
        <div class="form-input">
            <button id="login-btn">Login</button>
        </div>
    </div>

    <script>
        (function() {
            const fonts = ["cursive", "sans-serif", "serif", "monospace"];
            let captchaValue = "";

            function generateCaptcha() {
                let value = btoa(Math.random() * 1000000000);
                value = value.substr(0, 5 + Math.random() * 5);
                captchaValue = value;
            }

            function setCaptcha() {
                let html = captchaValue.split("").map((char) => {
                    const rotate = -20 + Math.trunc(Math.random() * 30);
                    const font = Math.trunc(Math.random() * fonts.length);
                    return <span style="transform:rotate(${rotate}deg); font-family:${fonts[font]};">${char}</span>;
                }).join("");
                document.querySelector(".login-form .captcha .preview").innerHTML = html;
            }

            function initCaptcha() {
                document.querySelector(".login-form .captcha .captcha-refresh").addEventListener("click", function() {
                    generateCaptcha();
                    setCaptcha();
                });
                generateCaptcha();
                setCaptcha();
            }

            initCaptcha();

            document.querySelector(".login-form #login-btn").addEventListener("click", function() {
                let inputCaptchaValue = document.querySelector(".login-form .captcha-form #captcha-input").value;
                if (inputCaptchaValue === captchaValue) {
                    alert("Logging In!");
                } else {
                    alert("Invalid captcha");
                }
            });
        })();
    </script>
</body>
</html>