title: split the string by last comma
body: <p>I have string in jQuery.</p>
  
  <pre><code>var s = "Text1, Text2, Text,true";
  </code></pre>
  
  <p>I need split this variable in two part:</p>
  
  <pre><code>var s1 = substring(...); //after this s1="Text1, Text2, Text"
  var s2 = substring(...); //after this s2="true"
  </code></pre>
  
  <p>Can you help me split variable?</p>