This gist is to archive the way we code a "privacy bar", a bit of legal text that must appear on each viewing of a page on a site. The act of closing the privacy bar once sets a cookie that will make that privacy notice not appear again until the cookie is deleted or expires.

jmx2-privacy-bar.js

/*
This gist is to archive the way we code a "privacy bar", a bit of legal text that must appear 
on each viewing of a page on a site. The act of closing the privacy bar once sets a cookie 
that will make that privacy notice not appear again until the cookie is deleted or expires.

<div class="privacy-bar" id="privacy-bar" style="display: block;">
    <div class="privacy-bar-content">
        <p>We use cookies to make interactions with our websites and services easy and meaningful, 
	to better understand how they are used and to tailor advertising. You can read more and make 
	your cookie choices&nbsp;<a href="#">here</a>. By continuing to use this site you are giving 
	us your consent to do this.</p>
    </div>
    <div id="privacy-bar-close">
        <span alt="Close button" class="privacy-bar-close-button"></span>
    </div>
</div>

 */

// assume jQuery is available
var jmx2Base = jmx2Base || {};
jmx2Base.privacyBar = jmx2Base.privacyBar || {};

(function($){
	"use strict";

    jmx2Base.privacyBar.getCookie = function(theKey) {
        if (!theKey) { return null; }
        return decodeURIComponent(document.cookie.replace(new RegExp("(?:(?:^|.*;)\\s*" + 
	  encodeURIComponent(theKey).replace(/[\-\.\+\*]/g, "\\$&") + "\\s*\\=\\s*([^;]*).*$)|^.*$"), "$1")) || null;
    };

    jmx2Base.privacyBar.loadPrivacyBar = function() {
        var privacybar = $(".privacy-bar");
        jmx2Base.privacyBar.validatePrivaceBar(privacybar, jmx2Base.privacyBar.getCookie('privacy_bar'));
    };

    jmx2Base.privacyBar.validatePrivaceBar = function(privacybar, cookiePrivacyBar) {
        if (privacybar  &&  cookiePrivacyBar !== "hidden") {
            privacybar.show();

            $("#privacy-bar-close").click(function () {
                privacybar.hide();
                jmx2Base.privacyBar.setCookie();
            });
        }
    };
    jmx2Base.privacyBar.setCookie = function() {
        // 30*24*60*60 = 2592000 seconds = 30 days
        jmx2Base.utils.setCookie('hidden', 'privacy_bar', 30*24*60*60, location.hostname);
    };

    $(document).ready(function () {
        jmx2Base.privacyBar.loadPrivacyBar();
    });

}(jQuery));