cordova create  oooxxxx

see js/index.js

onDeviceReady: function() {
  app.receivedEvent(‘deviceready’);
}

Now put AdMob Code

onDeviceReady: function() {
       
        // place our admob ad unit id here
        var admobid = {};
 
        if( /(android)/i.test(navigator.userAgent) ) {
          admobid = { // for Android
            banner: ‘ca-app-pub-xxxxxxxxxxxxx/oooooooooooo’,
            interstitial: ‘ca-app-pub-xxxxxxxxxxxxx/oooooooooooo’
          };
        } else if(/(ipod|iphone|ipad)/i.test(navigator.userAgent)) {
          admobid = { // for iOS
            banner: ‘ca-app-pub-xxxxxxxxxxxxx/oooooooooooo’,
            interstitial: ‘ca-app-pub-xxxxxxxxxxxxx/oooooooooooo’
          };
        } else {
          admobid = { // for Windows Phone
            banner: ‘ca-app-pub-xxxxxxxxxxxxx/oooooooooooo’,
            interstitial: ‘ca-app-pub-xxxxxxxxxxxxx/oooooooooooo’
          };
        }
       
        if (! AdMob ) { alert( ‘admob plugin not ready’ ); return; }
       
        // this will create a banner on startup
        AdMob.createBanner( {
          adId: admobid.banner,
          adSize: ‘SMART_BANNER’,
          position: AdMob.AD_POSITION.BOTTOM_CENTER,
          isTesting: true, // TODO: remove this line when release
          overlap: false,
          offsetTopBar: false,
          bgColor: ‘black’
        } );
       
         this will load a full screen ad on startup
        AdMob.prepareInterstitial({
          adId: admobid.interstitial,
          isTesting: true, // TODO: remove this line when release
          autoShow: true
        });
     
        app.receivedEvent(‘deviceready’);
}

PS：If see example https://github.com/floatinghotpot/cordova-admob-pro/blob/master/test/index.html
Maybe this need to change

reference
https://www.npmjs.com/package/cordova-plugin-admobpro
https://github.com/floatinghotpot/cordova-admob-pro/blob/master/test/index.html
https://github.com/floatinghotpot/cordova-admob-pro/blob/master/test/admob_simple.js