Google Publisher Tag registering to Events

Question

I looked at the Google Publisher Tag reference and decided that I could add some events to my ad slots. It works great if I have defined only one slot. If I add more slots, the events keep repeating on my console number of times I have slots.

So, if I do something like this:

<script type='text/javascript'>
 googletag.cmd.push(function() { 
      var slot1 = googletag.defineSlot('/123456/leadeboard', [[728, 90]], 'div-gpt-ad-123456789-0').addService(googletag.pubads());
      var slot2 = googletag.defineSlot('/123456/leadeboard', [[728, 90]], 'div-gpt-ad-123456789-0').addService(googletag.pubads());
      var slot3 = googletag.defineSlot('/123456/leadeboard', [[728, 90]], 'div-gpt-ad-123456789-0').addService(googletag.pubads());
        googletag.pubads().enableSingleRequest(); 
        googletag.pubads().addEventListener('slotRenderEnded', function(event) {
          console.log('Slot has been rendered:');
        });
        googletag.enableServices();
 });
</script>

My console.log would be 3x "Slot has been rendered:". If I remove two of the .addService from the defineSlot part, it only console.logs it once, but then the ad is not rendered.

Is there a way how to remove extra logging without breaking everything else? It can get extremely messy after a while.

Thanks!

Answer 1

Nastasja，

输出重复三次的原因是您注册的事件处理程序侦听了＆＃39; slotRenderEnded＆＃39;事件，每次一个插槽渲染时发生。由于您的示例有三个插槽，因此该事件将触发三次。您可以通过检查传入的事件对象来查看哪个槽触发回调。

 googletag.pubads().addEventListener('slotRenderEnded', function(event) {
        console.log('Slot has been rendered:');
        console.log(event); //inspect event
        console.log(event.slot); //inspect slot
 });

即使事件前三次，您也可以通过比较事件中的插槽来添加基于插槽的逻辑：

 var slot1 = googletag.defineSlot('/123456/leadeboard', [[728, 90]], 'div-gpt-ad-123456789-0').addService(googletag.pubads());
 googletag.pubads().addEventListener('slotRenderEnded', function(event) {
    if(slot1 === event.slot){
        console.log('slot1 has been rendered');
    }
 });

您可以在GPT documentation

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