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ajaxmessage.html
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<!DOCTYPE html>
<!--the HTML's language-->
<html lang="en">
<head>
<meta charset="utf-8">
<title> New Entry </title>
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width,initial-scale=1">
<!-- CSS -->
<link rel="stylesheet" type="text/css" href="css/guestbook.css">
<link rel="stylesheet"
href="https://cdn.jsdelivr.net/npm/bootstrap@4.0.0/dist/css/bootstrap.min.css"
integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm"
crossorigin="anonymous">
<!-- Google Fonts -->
<link rel="preconnect" href="https://fonts.googleapis.com">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<link
href="https://fonts.googleapis.com/css2?family=Baloo+2&display=swap"
rel="stylesheet">
</head>
<body>
<div class="topnav">
<a href="/" />Home</a>
<a href="/guestbook" />Guestbook</a>
<a href="/newmessage" />New Entry</a>
<a class="active" href="/ajaxmessage" />Ajax</a>
</div>
<div id="paddingstuff">
<h1 id="title" style="color:#416050;"> AJAX Form </h1>
<hr>
<h2 style="color:#40413d; font-size: 20px;"> Want to leave a message to the backend?</h2>
<p id="alt-text"> Write your message in the form below and click
submit
to see your message.</p>
<br />
<!-- THE GUESTBOOK ENTRY FORM -->
<div id="newentrycontainer2">
<h3 style="font-size: 18px; color:#d6a95a; font-family: 'Franklin Gothic Medium';">New AJAX Entry</h3>
<hr>
<br />
<form id="ajax-form">
<div class="form-group">
<label for="name" id="label">Name</label>
<input type="text" class="form-control" id="username"
name="username" placeholder="What's your name?">
</div>
<div class="form-group">
<label for="country" id="label">Country</label>
<input type="text" class="form-control" id="country"
name="country" placeholder="Where are you from?">
</div>
<div class="form-group">
<label for="message" class="form-label" id="label">Message</label>
<textarea required name="message" class="form-control"
id="message"
rows="3"></textarea>
</div>
<button type="submit" id="submit-btn" class="btn
btn-primary">Submit</button>
</form>
<div id="message-container"></div>
<br />
</div>
</div>
<!-- for Bootstrap: -->
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js"
integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN"
crossorigin="anonymous"></script>
<script
src="https://cdn.jsdelivr.net/npm/popper.js@1.12.9/dist/umd/popper.min.js"
integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q"
crossorigin="anonymous"></script>
<script
src="https://cdn.jsdelivr.net/npm/bootstrap@4.0.0/dist/js/bootstrap.min.js"
integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl"
crossorigin="anonymous"></script>
</body>
<script>
// selects the form and message container elements
const form = document.getElementById('ajax-form');
const messageContainer = document.getElementById('message-container');
// adds event listener for the form submit event
form.addEventListener('submit', function(event) {
// prevents the default form submission behavior
event.preventDefault();
// collects the form data
const formData = new FormData(form);
// creates a new XMLHttpRequest object
const xhr = new XMLHttpRequest();
// sets up the request
xhr.open('POST', '/ajaxmessage.html');
// handles the response
xhr.onreadystatechange = function() {
if (xhr.readyState === 4) {
if (xhr.status === 200) {
// parses the response JSON and display it in the message container
const response = JSON.parse(xhr.responseText);
messageContainer.textContent = response.message;
} else {
messageContainer.textContent = 'An error occurred.';
}
}
}
// sends the request
xhr.send(JSON.stringify({
username: formData.get('username'),
country: formData.get('country'),
message: formData.get('message')
}));
});
</script>
</html>