problem in javascript

In post creator plugin i added custom javascript code and it is working in localhost and working in my own testing sub-domain but when i uploaded to the client site wp-admin is not opening only white screen is coming.

When i remove the javascript code in index.php of the post creator plugin it is working. When i added the script code it is not working. I have tried many options like new installation of wordpress and adding the plugin. From my testing sub-domain i migrated the wordpress to the client domain imported the database and also correctly changed the wp-options still wp-admin is not working in client site. Anyone give me solution on this.