Check out example codes for "jquery ajax serialize form data example html". It will help you in understanding the concepts better.
Code Example 1
$.ajax({
type : 'POST',
url : 'url',
data : $('#form').serialize()
}
Code Example 2
<!DOCTYPE html>
<html>
<head>
<title>Webslesson Tutorial | Jquery Post Form Data using Ajax serialize() method</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" />
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.0/jquery.min.js"></script>
</head>
<body>
<br /><br />
<div class="container" style="width:600px;">
<h3>Jquery Post Form Data using Ajax serialize() method</h3><br />
<form id="submit_form">
<label>Name</label>
<input type="text" name="name" id="name" class="form-control" />
<br />
<label>Message</label>
<textarea name="message" id="message" class="form-control">
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