Show Interstitial Ad via AdMob in Ionic every 2 minutes

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I actually answered this question by userArlind a:

I’m using AdMob plugin in Ionic and with this code I show an Interstital ad:

function initAd(){

 // it will display smart banner at top center, using the default options
 if(AdMob) AdMob.createBanner( {
                          adId: admobid.banner,
                          bannerId: admobid.banner,
                          position:AdMob.AD_POSITION.BOTTOM_CENTER,
                          autoShow: true,
                          isTesting: false,
                          success: function(){
                          console.log('banner created');
                          },
                          error: function(){
                         console.log('failed to create banner');
                          }
                          } );

                                       window.AdMob.prepareInterstitial( 
                           {adId:admobid.interstitial, autoShow:false} );
    window.AdMob.showInterstitial();

 }

Is there a way to show intersitial ad every 2 minutes? Someone told me to add this:

setInterval(showInterstitial,1*60*1000)

but I don’t know where to add?

My answer was:

If you would like to show it every 2 minutes you should use:

setInterval(window.AdMob.showInterstitial, 2*60*1000);

and you should add it just before the closing bracket of your initAdd function:

function initAd(){


 // it will display smart banner at top center, using the default options
 if(AdMob) AdMob.createBanner( {
                          adId: admobid.banner,
                          bannerId: admobid.banner,
                          position:AdMob.AD_POSITION.BOTTOM_CENTER,
                          autoShow: true,
                          isTesting: false,
                          success: function(){
                          console.log('banner created');
                          },
                          error: function(){
                         console.log('failed to create banner');
                          }
                          } );

                                       window.AdMob.prepareInterstitial( 
                           {adId:admobid.interstitial, autoShow:false} );
    window.AdMob.showInterstitial();
  
  
  
  //!!!add the code here!!! - so, just paste what I wrote above:
  setInterval(window.AdMob.showInterstitial, 2*60*1000);

 }

You can see a simple setInterval usage on this jsFiddle example:

function a(){
    alert("hi every 2 seconds");
};

setInterval(a, 2*1000);

The reason why you shouldn’t call it like this (note the brackets after a): setInterval(a(), 2*1000); is that then your function would be called only once (you would see only one alert popping up). Example on jsFiddle:

function a(){
    alert("hi every 2 seconds");
};

setInterval(a(), 2*1000);