title: check if the field value exists in the database by javascript
body: <p>check if the field value exists in the database by <code>javascript</code></p>
  
  <p>Is it possible?</p>
  
  <p>maybe something like this ..</p>
  
  <pre><code>search = mysql_query("SELECT * FROM table3 WHERE name = 'name' AND title = 'title'");
  if(@mysql_num_rows(search) &gt; 0){
  </code></pre>