[Request] HTML code for disable some selection text but remain some selection area?

I see some website can disable selection text on some body post. But remain some text that can still be selected. Like writing post can not be selected for protecting that content, but html code can be selected for share.
How they can to do that?

Thanks.
didla08

Please provide an example website that exhibits this behaviour.

Actually i found 3 blogs can do that. But i just remember 1. here: http://helplogger.blogspot.com/2012/...nails-for.html
Their text can not be copied but the html code can be copied. I search in google but i don't get the right answer. Maybe you can help me out sir.

Try this JavaScript

Code:

---

<script>
if (typeof document.onselectstart!="undefined") {
  document.onselectstart=new Function ("return false");
}
else{
  document.onmousedown=new Function ("return false");
  document.onmouseup=new Function ("return true");
}
</script>

---

Or with CSS, however it may not work on some browsers. Use JavaScript for more availability.

Code:

---

.un-select-able {
  -webkit-user-select: none;  /* Chrome all / Safari all */
  -moz-user-select: none;    /* Firefox all */
  -ms-user-select: none;      /* IE 10+ */

  /* No support for these yet, use at own risk */
  -o-user-select: none;
  user-select: none;         
}

---

Thank you sir for your help.
i've tried and it is working. :)