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HTML

              
                <!-- Usually we can style HTML attributes with pseudo elements, but some elements can't take children, therefore can't take pseudo elements - img is one such element. We can use js to get the attribute from the element and add it to the HTML -->

<div class="container">
  
  <h1>Show Alt Attribute on Hover</h1>
  
  <div class="img-wrap">
    
    <img class="img" src="https://unsplash.it/201/200" alt="So far so good." />

    <img class="img" src="https://unsplash.it/202/200" alt="I run so far." />

    <img class="img" src="https://unsplash.it/203/200" alt="I have ennui." />  

    <img class="img" src="https://unsplash.it/204/200" alt="Peeling yellow wallpaper." /> 
    
  </div>
  
</div>
              
            
!

CSS

              
                @import url(https://fonts.googleapis.com/css?family=Roboto);

/* ----- Page Styling ----- */
/* -- Irrelevant to Pen. Scroll down. -- */
    body { height: 100%; width: 100%; background-color: #333; color: grey; font-family: 'Roboto'} 
  
  .container { 
    max-width: 960px; 
    height: 100%;
    margin: 0 auto; 
    padding: 20px;
  }

  .img-wrap {
    display: flex;
    flex-direction: row;
    justify-content: space-around;
  }

  .img { display: block; }

  h1 {
    text-align: center;
    text-transform: uppercase;
    font-weight: 400;
    letter-spacing: 2px;
    font-size: 24px;
  }

/* ----- Style the elements ----- */

  /* Wrap the image and alt text */
  /* Will be added with js */
    .alt-wrap { 
      display: block;
      position: relative;
      margin: 20px;
      color: whitesmoke;
      border: 1px solid mediumorchid;
    }

  /* The alt text itself */
  /* Will be added with js */
    .alt-wrap p.alt {
      position: absolute;
      opacity: 0; /* hide initially */
      left: 0; right: 0; bottom: 0;
      margin: 0;
      padding: 15px;
      font-size: 14px;
      line-height: 22px;
      background-color: rgba(0,0,0,0.8);
      transition: all 300ms ease;
      transition-delay: 300ms;
    }

  /* Hovering over the wrapper shows its alt p*/
    .alt-wrap:hover > p.alt { 
      opacity: 1; 
      transition-delay: 0s;
    }
              
            
!

JS

              
                // Wrap every .img in a div
  // 1. For all items with class .img...
  // 2. Wrap them in a div
  $(".img").wrap('<div class="alt-wrap"/>');

// Add alt text after each .img
  // 1. For all items with class .img...
  // 2. Run a function for each of them...
  // 3. To add a p element after it
  // 5. Containing that element's alt text
  $(".img").each(function() {
    $(this).after('<p class="alt">' + $(this).attr('alt') + '</p>');
  })

// CSS shows/hides the alt text on hover




              
            
!
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