If you try to copy and highlight this post, you will notice that you can not. Why don't you give that a try now. I have included a script in my blog html to prevent my contents from being copied. The script works on most browsers but not all. If you happened to be able to copy, then the code I embedded in my html does not work on your browser. That's the first unfortunate thing I want to let you know about these codes. They don't work 100%. Even if the code works on a particular browser like Internet Explorer and Firefox, it might not work in a few years when these browsers update to a newer version making your code obsolete.
Another method people can use to enable the right click function after you disabled it is as shown here by BlogAnything. Copying text content is harder than copying images. It is because even with the disable code you used, the user can always go to VIEW -> PAGE SOURCE and copy the image URL. Of course there are many other ways. So yeah, while it does make it harder to steal online material, it's not impossible. Anyone who is determined to do so, will figure out a way to do so.
Now that you know the cons about disabling the right click function, and you still want to install the code, the code is below. If you are using Firefox browser, don't bother installing the disable right click code because Firefox overrides the code. In another word, it doesn't work. It took me several days of looking for codes after codes until finally my brother who is html literate explained to me that Firefox won't let you do that.
Disable Right Click Code:
Good luck and I hope if you do choose to disable the right click function on your blog, it will deter people from stealing what you work so hard to publish. Happy blogging!