adding in nonce to post data

ajax-test.js

/**
 * SerializeOnDemand
 *
 * In theory you could do this inline, but sometimes its easier to just
 * do it within a method and re-use it where you need to.
 * 
 * @return {object} Serialized Object
 */
var searializeOnDemand = function() {
	// Go ahead and serialize the form data.
	var form_data = jQuery( '#theForm' ).seraizlize();

	if ( window.MyAjax ) {
		// At this point you know you have access to the localized object,
		// so now you can append to the serialized data object.
		form_data.postCommentNonce = window.MyAjax.postCommentNonce;
	}
	return form_data;
}

jQuery.post( ajaxurl, searializeOnDemand, function( response ) {
	/**
	 * At this point, response should equal a json encoded response
	 * SO if you're doing something like this:
	 *
	 * wp_send_json_success( array( 'some_key' => 'some value' ) )
	 * you can access it like so:
	 */
	
	if ( response.success ) {
		// Success data is stored within response.data
		alert( response.data.some_key );
	}
} );