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Access to returned Json single value from controller

i don’t understand how to access to a single value returned after ajax call datatype JSON. My controller returned to me this value: { name: Andrea catname: Minnie } How can i acces it from Ajax call response and do some check? My Script is below jQuery(document).ready(function($) { $(“#avanti”).click(function(){ $.ajax({ type: “POST”, url: ‘index.php?option=com_doclf_users&task=checkcodicefiscale&format=json’, data: […]