HTML code of URL Decoder And Encoder | Encoder And Decoder tool
<!DOCTYPE html>
<html lang=”en”>
<head>
<meta charset=”UTF-8″>
<meta name=”viewport” content=”width=device-width, initial-scale=1.0″>
<title>Encoder & Decoder</title>
<style>
body {
font-family: Arial, sans-serif;
background-color: #f0f0f0;
margin: 0;
padding: 0;
}
.container {
max-width: 600px;
margin: 20px auto;
padding: 20px;
background-color: #fff;
border-radius: 8px;
box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}
textarea {
width: 100%;
height: 150px;
margin-bottom: 10px;
padding: 10px;
box-sizing: border-box;
}
.shift-input {
width: 80px;
margin-right: 10px;
}
.btn-group {
display: flex;
justify-content: space-between;
flex-wrap: wrap;
}
button {
padding: 10px 20px;
font-size: 16px;
cursor: pointer;
transition: background-color 0.3s ease;
}
button:hover {
background-color: #ddd;
}
@media screen and (max-width: 500px) {
.shift-input {
width: 100%;
margin-right: 0;
margin-bottom: 10px;
}
button {
width: calc(50% – 5px);
}
}
</style>
</head>
<body>
<div class=”container”>
<h2>Encoder & Decoder</h2>
<textarea id=”inputText” placeholder=”Enter text…”></textarea>
<input type=”number” id=”shift” class=”shift-input” placeholder=”Shift” min=”1″>
<div class=”btn-group”>
<button onclick=”encodeText()”>Encode</button>
<button onclick=”decodeText()”>Decode</button>
</div>
<textarea id=”outputText” placeholder=”Result…” readonly></textarea>
</div>
<script>
function encodeText() {
const inputText = document.getElementById(‘inputText’).value;
const shift = parseInt(document.getElementById(‘shift’).value);
if (isNaN(shift)) {
alert(“Please enter a valid shift value.”);
return;
}
const encodedText = encode(inputText, shift);
document.getElementById(‘outputText’).value = encodedText;
}
function decodeText() {
const inputText = document.getElementById(‘inputText’).value;
const shift = parseInt(document.getElementById(‘shift’).value);
if (isNaN(shift)) {
alert(“Please enter a valid shift value.”);
return;
}
const decodedText = decode(inputText, shift);
document.getElementById(‘outputText’).value = decodedText;
}
function encode(text, shift) {
return text.split(”).map(char => {
const charCode = char.charCodeAt(0);
if (char >= ‘A’ && char <= ‘Z’) {
return String.fromCharCode(((charCode – 65 + shift) % 26) + 65);
} else if (char >= ‘a’ && char <= ‘z’) {
return String.fromCharCode(((charCode – 97 + shift) % 26) + 97);
} else {
return char;
}
}).join(”);
}
function decode(text, shift) {
return text.split(”).map(char => {
const charCode = char.charCodeAt(0);
if (char >= ‘A’ && char <= ‘Z’) {
return String.fromCharCode(((charCode – 65 – shift + 26) % 26) + 65);
} else if (char >= ‘a’ && char <= ‘z’) {
return String.fromCharCode(((charCode – 97 – shift + 26) % 26) + 97);
} else {
return char;
}
}).join(”);
}
</script>
</body>
</html>