title: what is .src in JavaScript?
body: <p>What is <code>.src</code> in the JavaScript code below?</p>
  
  <pre class="lang-js prettyprint-override"><code>function jsDropDown(imgid,folder,newimg) {
      document.getElementById(imgid).src="http://www.cookwithbetty.com/" + folder + "/" + newimg + ".gif";
  }
  </code></pre>