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HTML
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Captcha Generator | CodingAyush</title>
<link rel="stylesheet" href="style.css" />
<!-- Fontawesome CDN Link -->
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.2.1/css/all.min.css" />
</head>
<body>
<div class="container">
<header>Captcha Generator</header>
<div class="input_field captch_box">
<input type="text" value="" disabled />
<button class="refresh_button">
<i class="fa-solid fa-rotate-right"></i>
</button>
</div>
<div class="input_field captch_input">
<input type="text" placeholder="Enter captcha" />
</div>
<div class="message">Entered captcha is correct</div>
<div class="input_field button disabled">
<button>Submit Captcha</button>
</div>
</div>
<script src="script.js"></script>
</body>
</html>
CSS
/* Import Google font - Poppins */
@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@200;300;400;500;600;700&display=swap");
* {
margin: 0;
padding: 0;
box-sizing: border-box;
font-family: "Poppins", sans-serif;
}
body {
height: 100vh;
display: flex;
align-items: center;
justify-content: center;
background: #11131e;
}
.container {
position: relative;
max-width: 300px;
width: 100%;
border-radius: 12px;
padding: 15px 25px 25px;
background: #fff;
box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
}
header {
color: #333;
margin-bottom: 20px;
font-size: 18px;
font-weight: 600;
text-align: center;
}
.input_field {
position: relative;
height: 45px;
margin-top: 15px;
width: 100%;
}
.refresh_button {
position: absolute;
top: 50%;
right: 10px;
transform: translateY(-50%);
background: #826afb;
height: 30px;
width: 30px;
border: none;
border-radius: 4px;
color: #fff;
cursor: pointer;
}
.refresh_button:active {
transform: translateY(-50%) scale(0.98);
}
.input_field input,
.button button {
height: 100%;
width: 100%;
outline: none;
border: none;
border-radius: 8px;
}
.input_field input {
padding: 0 15px;
border: 1px solid rgba(0, 0, 0, 0.1);
}
.captch_box input {
color: #6b6b6b;
font-size: 22px;
pointer-events: none;
}
.captch_input input:focus {
box-shadow: 0 1px 1px rgba(0, 0, 0, 0.08);
}
.message {
font-size: 14px;
margin: 14px 0;
color: #826afb;
display: none;
}
.message.active {
display: block;
}
.button button {
background: #826afb;
color: #fff;
cursor: pointer;
user-select: none;
}
.button button:active {
transform: scale(0.99);
}
.button.disabled {
opacity: 0.6;
pointer-events: none;
}
JS
// Selecting necessary DOM elements
const captchaTextBox = document.querySelector(".captch_box input");
const refreshButton = document.querySelector(".refresh_button");
const captchaInputBox = document.querySelector(".captch_input input");
const message = document.querySelector(".message");
const submitButton = document.querySelector(".button");
// Variable to store generated captcha
let captchaText = null;
// Function to generate captcha
const generateCaptcha = () => {
const randomString = Math.random().toString(36).substring(2, 7);
const randomStringArray = randomString.split("");
const changeString = randomStringArray.map((char) => (Math.random() > 0.5 ? char.toUpperCase() : char));
captchaText = changeString.join(" ");
captchaTextBox.value = captchaText;
console.log(captchaText);
};
const refreshBtnClick = () => {
generateCaptcha();
captchaInputBox.value = "";
captchaKeyUpValidate();
};
const captchaKeyUpValidate = () => {
//Toggle submit button disable class based on captcha input field.
submitButton.classList.toggle("disabled", !captchaInputBox.value);
if (!captchaInputBox.value) message.classList.remove("active");
};
// Function to validate the entered captcha
const submitBtnClick = () => {
captchaText = captchaText
.split("")
.filter((char) => char !== " ")
.join("");
message.classList.add("active");
// Check if the entered captcha text is correct or not
if (captchaInputBox.value === captchaText) {
message.innerText = "Entered captcha is correct";
message.style.color = "#826afb";
} else {
message.innerText = "Entered captcha is not correct";
message.style.color = "#FF2525";
}
};
// Add event listeners for the refresh button, captchaInputBox, submit button
refreshButton.addEventListener("click", refreshBtnClick);
captchaInputBox.addEventListener("keyup", captchaKeyUpValidate);
submitButton.addEventListener("click", submitBtnClick);
// Generate a captcha when the page loads
generateCaptcha();