When you set up your first Content Experiment, you might face a cookie domain name consistency error. This error is caused by using different domain name settings for Google Analytics and Content Experiments code.
To fix the error, change the content experiment code to reflect the domain name settings used in Google Analytics Code.
Google Analytics Code
var _gaq = _gaq || [];
_gaq.push(['_setAccount', 'UA- Account Id']);
_gaq.push(['_setDomainName', '.example.com']);
_gaq.push(['_setAllowLinker', true]);
_gaq.push(['_trackPageLoadTime']);
_gaq.push(['_trackPageview']);
(function() {
var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
})();
Google Content Experiment Code
<script>function utmx_section(){}function utmx(){}(function(){var
k='experiment-id',d=document,l=d.location,c=d.cookie;
if(l.search.indexOf('utm_expid='+k)>0)return;
function f(n){if(c){var i=c.indexOf(n+'=');if(i>-1){var j=c.
indexOf(';',i);return escape(c.substring(i+n.length+1,j<0?c.
length:j))}}}var x=f('__utmx'),xx=f('__utmxx'),h=l.hash;d.write(
'<sc'+'ript src="'+'http'+(l.protocol=='https:'?'s://ssl':
'://www')+'.google-analytics.com/ga_exp.js?'+'utmxkey='+k+
'&utmx='+(x?x:'')+'&utmxx='+(xx?xx:'')+'&utmxtime='+new Date().
valueOf()+(h?'&utmxhash='+escape(h.substr(1)):'')+
'" type="text/javascript" charset="utf-8"><\/sc'+'ript>')})();
</script><script>utmx('url','A/B');</script>
Since the Analytics code uses the format - ‘.example.com’: _gaq.push(['_setDomainName', '.example.com']), add the following code snippet above the Content Experiments Code
<script>
_udn = ".example.com";
</script>
The Final Content Experiment Code will be:
<script>
_udn = ".example.com";
</script>
<script>function utmx_section(){}function utmx(){}(function(){var
k='experiment-id',d=document,l=d.location,c=d.cookie;
if(l.search.indexOf('utm_expid='+k)>0)return;
function f(n){if(c){var i=c.indexOf(n+'=');if(i>-1){var j=c.
indexOf(';',i);return escape(c.substring(i+n.length+1,j<0?c.
length:j))}}}var x=f('__utmx'),xx=f('__utmxx'),h=l.hash;d.write(
'<sc'+'ript src="'+'http'+(l.protocol=='https:'?'s://ssl':
'://www')+'.google-analytics.com/ga_exp.js?'+'utmxkey='+k+
'&utmx='+(x?x:'')+'&utmxx='+(xx?xx:'')+'&utmxtime='+new Date().
valueOf()+(h?'&utmxhash='+escape(h.substr(1)):'')+
'" type="text/javascript" charset="utf-8"><\/sc'+'ript>')})();
</script><script>utmx('url','A/B');</script>
To use a single code for running experiments in multiple sub-domains change _udn = ".example.com" to _udn = "example.com" and _gaq.push(['_setDomainName', '.example.com']); to _gaq.push(['_setDomainName', 'example.com']);
If you want expert help in setting up Content Experiments for your website, contact us or you can call us at: India (Ph): +91 9497189032, UK (Ph): +44 (0)20-3371-9976 or US (Ph): +1 650-491-0004
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