Create a code snippet template

Evening all, I have need to create a button via a code block that I want to put on multiple product detail pages in my shop.  It's a button that does one thing and it needs to do the same thing on about 10 different products.  I'm wondering if there's a way to save these code snippets and add them to other pages without having to re-create the same code block 10 different times?

I don't think I made myself clear because my request doesn't require the need to look at my site.  Basically what I'm trying to do is create a re-usable piece of code - which in this case happens to be a button.  I don't want to have to re-type the code into every product page that needs this snippet.  I want to make my own button and re-use it anywhere I want.

Hopefully that is a little more clear.  Thanks.

You can assign a tag for these products, then use JavaScript to add button for products belong this tag.

Can you share link to page where you insert a button? We can check easier.