Get data from external site and then modify it
<p>If somesite(external site) returns a string like "cost is 10$", would it be possible to display it as "price:10$" using only javascript and on my own site? 
External site is facebook.com or something.
My site is my site.</p>

<hr>

<p>Hey guys. I am editing a question. I want to get data FROM external site. I donnt need just modify string it's easy, of course. I need something like.</p>

<blockquote>
  <p>var str =
  GetData("http://facebook.com/blablbal");</p>
  
  <p>str.Replace('blbablab','blabal');</p>
  
  <p>ShowToUser(str);</p>
</blockquote>

<p>I hope you understand me. Sorry i'm not a native speaker.</p>

<hr>

<p>I mean get data using XMLHttpRequest or iframe and then modify it. One of the moderators edited my question and replace title. But he donnt understand what i actually mean.</p>

<hr>

<p>Here is real example.</p>

<p>http://vkontakte.ru/share.php?act=count&amp;index=[index]&amp;url=http://talismansochi2014.ru/grandfather_frost/go.php returns </p>

<blockquote>
  <p>VK.Share.count(0, 8718);</p>
</blockquote>

<p>i want to get 8718 and show user just number 8718. And i can use only JS. I cannt make request from server and then return webpage.</p>

<hr>

<p>Maybe i need recreate question or provide some additional information?</p>
