title: How to replace all empty <img src=""> on a page with JavaScript on dom loaded?
body: <p>I need a function, that starts, when the DOM is loaded.</p>
  
  <p>In my HTML Page are several empty Image Tags, like  and I want to add an Image-Name into the src-property when everything is loaded to get something like</p>
  
  <pre><code>&lt;img src="blank.jpg"&gt;.
  </code></pre>
  
  <p>Best wishes
  Chris</p>