Thank you for your response. I followed the documentation and everything was fine. However, after I clicked the Cache/Show button I'm hitting the same error message as seen below
Simulator: 29:ReferenceError: sdkbox is not defined
at a (E:\AdmobTest\library\bundle.project.js?009:NaN:0)
I'm running on android and I'm not sure if it's an issue since the documentation you provided was for ios.
On top of sdkbox is not defined it seems that the admobInit was not being called for some reasons.
The same issue persist on both windows and mac version of cocos creator v 1.3.1
Hoping to hear from you soon. Thank you.