I am looking for a way to display a background image in place of a 300x250 ad when it is blocked by adblock. Does anyone have a solution for this issue? Using a div currently shows the background before the ad loads, which is not the desired outcome.
Thank you
When a visitor has adblock software installed on their computer, determining if an ad is being blocked becomes quite tricky. However, one potential solution involves using JavaScript to check if ads have loaded at the end of a page. If they haven't, you can apply a CSS class to your div element to display a background image instead. Here's some pseudo code to illustrate:
<style type="text/css">
.adblocked { background: url("img/no-ad.jpg") left top no-repeat; }
</style>
<div id="ad"></div>
<script src="ads.js"></script>
<script>
if (typeof adLibraryName === "undefined") {
// ad content was not loaded
document.getElementById("ad").className += " adblocked";
}
</script>
As mentioned by MAXIM, this issue does not involve PHP as it operates on the server-side and cannot detect ad blocking mechanisms on the client side. In essence, tackling ad blockers is purely a client-side challenge.
To verify if Adsense is being obstructed, and consequently insert alternative content into the ad containers.
if (typeof(window.google_jobrunner) == 'undefined') {
// Adsense appears to be blocked, so load a different type of content into the containers
}
It's recommended to specify the height of the containers using CSS in this scenario.
You can view what elements Adblock Plus is filtering in Firefox by choosing 'Open blockable items'.
Adblock Plus also obstructs images with standard ad dimensions in their file names, such as 'whatever_468x60.png' which might be prevented from displaying.
Since you've mentioned PHP in your question, let me respond wearing my PHP glasses: The issue here is that adblocking occurs on the client-side, while adding a div using PHP happens on the server side. You'd need to understand what's happening on the client-side first before writing your code, but unfortunately, that approach won't be effective. An alternative could involve making an AJAX request – although this would involve sending out the page without certainty if adblock is active or not...
Cheers and best wishes, ±…
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