jQuery serializeArray()

serializeArray() method
The serializeArray() method creates an array of objects (name and value) by serializing form values.You can select one or more form elements (like input and/or text area), or the form element itself.
Syntex:
$(selector).serializeArray()

<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
    $("button").click(function(){
        var x = $("form").serializeArray();
        $.each(x, function(i, field){
            $("#results").append(field.name + ":" + field.value + " ");
        });
    });
});
</script>
</head>
<body>

<form action="">
  First name: <input type="text" name="FirstName" value="Nitin"><br>
  Last name: <input type="text" name="LastName" value="Chauhan"><br>
</form>

<button>Serialize form values</button>

<div id="results"></div>

</body>
</html>