title: How to get the name of clicked image and compare it with a php variable?
body: <p>Two images, placed by php:  </p>
  
  <pre><code>echo "&lt;img onclick='test()' src=\"/img/Sun.png."\"&gt;";
  echo "&lt;img onclick='test()' src=\"/img/Moon.png."\"&gt;";
  $x = "Sun.png";
  </code></pre>
  
  <p>js:  </p>
  
  <pre><code>function test(){
  if (clicked_image_name == $x) ...do something
  </code></pre>
  
  <p>So, how to get the name of clicked image, and how to compare it with a php variable ?</p>