title: Detecting drag drop to HTML textbox?
body: <p>I have a normal search box on my webpage. It is filled with text: <code>Search this website</code></p>
  
  <p>This text is removed when you click into the box to type your search query:</p>
  
  <pre><code>onfocus="if(this.value=='Search this website') { this.value=''};
  </code></pre>
  
  <p>But how can I detect when someone drags text from the page onto the search box, as I often do myself? <code>onfocus</code> is not triggered and the previous text remains.</p>