I'm looking for a way to grab the utm_source value from a URL with javascript and pass it to Google DFP, which doesn't involve configuring anything in the DFP Admin (such as key-value targeting) as we don't have access to the admin panel for the specific site we are working with.
Would appreciate any tips / javascript code.
Use setTargetting. You will need to access the Inventory tab in DFP's dashboard to create the utm code keys (Key-values link)
<script>
function getParameterByName(name, url) {
if (!url) url = window.location.href;
name = name.replace(/[\[\]]/g, "\\$&");
var regex = new RegExp("[?&]" + name + "(=([^&#]*)|&|#|$)"),
results = regex.exec(url);
if (!results) return null;
if (!results[2]) return '';
return decodeURIComponent(results[2].replace(/\+/g, " "));
}
googletag.cmd.push(function () {
googletag.pubads().setTargeting('utm_source', getParameterByName('utm_source'));
});
</script>