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Jquery Using Ajax to Submit a Form

Sometimes you may have a form and want to submit it using ajax.

Suppose you have this simple form -

<form id="ajax_form" action="form_action.php">
 <label for="name">Name :</label>
 <input name="name" id="name" type="text" />
 <label for="name">Email :</label>
 <input name="email" id="email" type="text" />
 <input type="submit" value="Submit" />

The following jQuery code can be used (within a $(document).ready call) -

 var $form = $(this);
 type: 'POST',
 url: $form.attr('action'),
 data: $form.serialize(),
 success: function(data) {
 // Do something with the response
 error: function(error) {
 // Do something with the error


var $form = $(this) - the form, cached for reuse.

$('#ajax_form').submit(function(event){ - When the form with ID "ajax_form" is submitted run this function and pass the event as a parameter.

event.preventDefault(); - Prevent the form from submitting normally (Alternatively we can use return false after the ajax({}); statement, which will have the same effect)

url: $form.attr('action'), - Get the value of the form's "action" attribute and use it for the "url" property.

data: $form.serialize(), - Converts the inputs within the form into a string suitable for sending to the server. In this case it will return something like "name=Bob&"


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