Serialize method in jQuery
The serialize() method is an inbuilt method in jQuery which is used to create a URL encoded text string by serializing form values. This method can act on a jQuery object that has selected individual form controls, such as input, textarea etc. or the form element itself. Syntax
$(selector).serialize()
example
$("form" ).submit(function( event ) {
var querystring = $(this).serialize();
alert(querystring);
});
<form action="#" id="input_form">
First Name: <input type="text" name="firstName" /><br />
Last Name: <input type="text" name="lastName" /><br />
Email: <input type="text" name="email" /><br />
<input type="submit" value="send" name="submit" />
</form>
Full Source
<!DOCTYPE html>
<html lang="en">
<head>
<title>jQuery serialize() method</title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$("form" ).submit(function( event ) {
var querystring = $(this).serialize();
alert(querystring);
});
});
</script>
</head>
<body>
<form action="#" id="input_form">
First Name: <input type="text" name="firstName" /><br />
Last Name: <input type="text" name="lastName" /><br />
Email: <input type="text" name="email" /><br />
<input type="submit" value="send" name="submit" />
</form>
</body>
</html>
Only form elements are examined for inputs they contain, in all other cases the input elements to be serialized should be part of the set passed to the .serialize() method . Selecting both the form and its children in a set will cause duplicates in the serialized string.
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