Javascripts are not triggering in CRM 2013 & 2015 after importing organization

Dear All,

We have imported CRM 2011 organization in CRM 2013.

Now we are trying to debug some javascripts, but Javascripts in CRM 2013 environment is not getting triggered.

we also tried for a simple function like

function alert(){

debugger

alert("Hello");

}

i'm unable to understand this issue.

Following are the steps used for datamigration from CRM 2011 to CRM 2013.

1. Took DB backup of CRM 2011 env from SQL 2008 R2.

2. Restore that DB into SQL 2012 CRM 2013 Server.

3. Imported Organization from CRM 2013 Server Deployment Manager pointing to restored database.

Please suggest me a solution or if i'm missing something in these steps.

Thanks in advance.