title: Remove specific lines in a multiline textbox
body: <p>I have a Multiline textbox who I can paste URL's. The URL's will be paste into a string variable. Now I want, that just URL's from a specific domain can pass into the string variable.</p>
  
  <p><strong>For example:</strong>
  </p>
  
  <pre class="lang-none prettyprint-override"><code>http://domain-1.tld/gfdgfd.php?=2135346432
  http://domain-2.tld/fsefes.php?=2145312542
  http://domain-1.tld/random/folders/iwadaex.php?=2112313543
  http://domain-2.tld/igewex.php?=2135464432
  http://domain-1.tld/folder/inwadawx.php?=2135546432
  http://domain-2.tld/ihtfhtf.php?=2143534432
  </code></pre>
  
  <p>I a have a radiobutton with <code>Domain 1</code> and <code>Domain 2</code>. If <code>Domain 1</code> is checked, Only URL's from <code>Domain 1</code> will be put in the variable, and so on.</p>
  
  <p>I just need to know, how I filter the URL's...</p>