django csrf token in jquery

gistfile1.js

$(document).ready(function() {
    // Disable caching of AJAX responses
    $.ajaxSetup ({cache: false});
    $('html').ajaxSend(function(event, xhr, settings) {
        if (!(/^http:.*/.test(settings.url) || /^https:.*/.test(settings.url))) {
            // Only send the token to relative URLs i.e. locally.
            xhr.setRequestHeader("X-CSRFToken", $.cookie('csrftoken'));
        }
    });
});