Program7

 <!DOCTYPE html>

<html lang="en">

<head>

<meta charset="UTF-8">

<meta name="viewport" content="width=device-width, initial-scale=1.0">

<title>JSON, CSV, Hash Operations</title>

<style>

body { font-family: Arial, sans-serif; padding: 20px; background-

color: #f4f4f4; }

textarea { width: 100%; height: 100px; }

button { padding: 10px; background-color: #4CAF50; color: white;

border: none; cursor: pointer; }

button:hover { background-color: #45a049; }

.output { margin-top: 20px; }

</style>

</head>

<body>

<h2>JSON and CSV Operations</h2>

<!-- Convert JSON text to JavaScript Object -->

<h3>1. JSON to JavaScript Object</h3>

<textarea id="jsonInput" placeholder='{"name": "John", "age":

30}'></textarea><br>

<button onclick="jsonToObject()">Convert JSON to Object</button>

<div id="jsonObjectResult" class="output"></div>

<!-- Convert JSON to Date -->

<h3>2. JSON to Date</h3>

<textarea id="jsonDateInput" placeholder='{"date": "2024-11-

24T12:00:00Z"}'></textarea><br>

<button onclick="jsonToDate()">Convert JSON to Date</button>

<div id="jsonDateResult" class="output"></div>

<!-- Convert JSON to CSV -->

<h3>3. JSON to CSV</h3>

<textarea id="jsonForCsv" placeholder='[{"name": "John", "age": 30}, {"name":

"Jane", "age": 25}]'></textarea><br>

<button onclick="jsonToCsv()">Convert JSON to CSV</button>

<div id="csvResult" class="output"></div>

<!-- Convert CSV to JSON -->

<h3>4. CSV to JSON</h3>

<textarea id="csvInput"

placeholder='name,age\nJohn,30\nJane,25'></textarea><br>

<button onclick="csvToJson()">Convert CSV to JSON</button>

<div id="csvJsonResult" class="output"></div>

<!-- Create Hash -->

<h3>5. Create Hash from String</h3>

<textarea id="hashInput" placeholder="Enter string to hash"></textarea><br>

<button onclick="createHash()">Generate Hash</button>

<div id="hashResult" class="output"></div>

<script>

// Convert JSON to JavaScript Object

function jsonToObject() {

const jsonText = document.getElementById('jsonInput').value;

try {

const obj = JSON.parse(jsonText);

document.getElementById('jsonObjectResult').innerText =

JSON.stringify(obj, null, 2);

} catch (e) {

document.getElementById('jsonObjectResult').innerText = 'Invalid

JSON';

}

}

// Convert JSON to Date

function jsonToDate() {

const jsonText = document.getElementById('jsonDateInput').value;

try {

const obj = JSON.parse(jsonText);

const date = new Date(obj.date);

document.getElementById('jsonDateResult').innerText = date.toString();

} catch (e) {

document.getElementById('jsonDateResult').innerText = 'Invalid JSON or

Date';

}

}

// Convert JSON to CSV

function jsonToCsv() {

const jsonText = document.getElementById('jsonForCsv').value;

try {

const obj = JSON.parse(jsonText);

const keys = Object.keys(obj[0]);

const csv = [

keys.join(','),

...obj.map(e => keys.map(k => e[k]).join(','))

].join('\n');

document.getElementById('csvResult').innerText = csv;

} catch (e) {

document.getElementById('csvResult').innerText = 'Invalid JSON';

}

}

// Convert CSV to JSON

function csvToJson() {

const csvText = document.getElementById('csvInput').value;

const lines = csvText.split('\n');

const headers = lines[0].split(',');

const json = lines.slice(1).map(line => {

const values = line.split(',');

return headers.reduce((acc, header, i) => {

acc[header] = values[i];

return acc;

}, {});

});

document.getElementById('csvJsonResult').innerText = JSON.stringify(json,

null, 2);

}

// Create Hash using crypto.createHash()

function createHash() {

const crypto = require('crypto');

const str = document.getElementById('hashInput').value;

const hash = crypto.createHash('sha256').update(str).digest('hex');

document.getElementById('hashResult').innerText = hash;

}

</script>

</body>

</html>

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