google-dfp.js

<script>
 // Load GPT
 var googletag = googletag || {};
 googletag.cmd = googletag.cmd || [];
 (function(){
   var gads = document.createElement('script');
   gads.async = true;
   var useSSL = 'https:' == document.location.protocol;
   gads.src = (useSSL ? 'https:' : 'http:') +
       '//www.googletagservices.com/tag/js/gpt.js';
   var node = document.getElementsByTagName('script')[0];
   node.parentNode.insertBefore(gads, node);
   })();
</script>

<script>


/*
in 	: inventory
sz 	: size
sl 	:slot
pr 	: is preload ?
re 	: is replace ?
rs 	: is responsive ?
rf 	: refreshed ?
*/

var ads =[{
			in: '/25671928/lankasri//video.banner//feed//infinite',
			sz: [300, 250],
			sl : 'dfp_banner_feed_infinite_1',
			pr: true,
			re: false,
			rs:false,
			rf : false
	}
		
	];
var slots = [];
var pub;
googletag.cmd.push(function() {
    pub = googletag.pubads();
	var preload = [];
	 
	   
	googletag.pubads().setCentering(true);
	googletag.pubads().disableInitialLoad();
	googletag.pubads().enableSingleRequest();
	googletag.enableServices();
    
ads.forEach(function(e,i){

if(e.rs[0]){
    if(e.rs[1] == 0)
    {
    var mapping = googletag.sizeMapping().addSize([100, 100], [320, 100]).addSize([320, 400], [320, 100]).
    addSize([320, 700], [320, 100]).addSize([750, 200], [728, 90]).addSize([1050, 200], [970, 90]).build();
    }
    else if(e.rs[1] == 1)
    {
      var mapping = googletag.sizeMapping().addSize([100, 100], [320, 100]).addSize([320, 400], [300, 250])
      .addSize([320, 700], [300, 250]).addSize([750, 200], [728, 90]).addSize([1050, 200], [970, 90]).build();
    }
    else
    {
    var mapping = googletag.sizeMapping().addSize([100, 100], [320, 100]).addSize([320, 400], [300, 250])
    .addSize([320, 700], [300, 250]).addSize([750, 200], [336, 280]).addSize([1050, 200], [728, 90]).build();
    }
	slots[i] = googletag.defineSlot(e.in, e.sz, e.sl).defineSizeMapping(mapping).addService(googletag.pubads()).setCollapseEmptyDiv(true, true);
}
else{
	slots[i] = googletag.defineSlot(e.in, e.sz, e.sl).addService(googletag.pubads()).setCollapseEmptyDiv(true, true);
}
googletag.display(ads[i].sl);
if(e.pr){
preload.push(slots[i]);
ads[i].rf = true;
}

else if ( verge.inViewport(document.querySelector('#'+e.sl+'_panel'),300) && !e.rf && $('#'+e.sl+'_panel').is(':visible'))
{
preload.push(slots[i]);
ads[i].rf = true;
}
});

pub.addEventListener('slotRenderEnded', function(event){

var divId = event.slot.getSlotElementId();
if(event.isEmpty === false){

    if( $("#"+divId+"_panel").has("#"+divId+"_replace").length > 0 )
    {
        $("#"+divId+"_replace").hide();
    }
}
else
{
$("#"+divId).hide();
}
});

googletag.pubads().refresh(preload);
});


var refreshDFP = function()
{
	console.log("hi");
	ads.forEach(function(e,i)
	{
	var pub = googletag.pubads();
	if ( verge.inViewport(document.querySelector('#'+e.sl+'_panel'),300) && !e.rf && $('#'+e.sl+'_panel').is(':visible'))
	{
		googletag.cmd.push(function() {
		googletag.pubads().refresh([slots[i]]);
		});
	ads[i].rf = true;
	}
	});
}

window.addEventListener('scroll', refreshDFP);
window.addEventListener('resize', refreshDFP);
</script>