Duplicate content in javascript ..?

Hello,

I had on every page similiar text (about 200 words) so I created javascript and I begin to render this text through javascript, I created file folder /disallow/ and I put there my js file with javascript (I blocked this through robots.txt also) but a few days ago I noticed that google is somehow indexing content generated by javascript (external js file). Will this cause duplicate content penalty or something like that ? thank you for your insights.. (I am talking about thousands of pages with similiar content generated by js)

Google obviously indexes javascript and css content. From what I have heard, googlebot now uses chrome browser to surf. Check the following articles out, and yes you will get penalty if they catch you.

Just remove it via GWMT --> Remove URLs

Duplicate content isn't bad, nor does it cause a penalty.

There are plenty of legitimate reasons for duplicate content.

Use rel=canonical to let google know which page is the original/most important, don't use any cloaking techniques and you'll be fine.

Dup content is only an issue if you're just stealing content from other sites and trying to rank it. It's not something to be paranoid about.