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Stuff you can do with CSS pointer events

A Pen By Martijn Cuppens

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HTML

            
              <div class="containter p-3 p-md-5">
  <div class="mb-5">
    <h1 class="h4">
      Stuff you can do with <code>pointer-events</code>
    </h1>
    <p>
      <code>pointer-events</code> is mostly used to bypass click events on an element. But did you know you can reset the pointer events of descendant elements? This allows us to do some interesting things&hellip;
    </p>
    <p class="small text-muted">
      (Bootstrap is included in this pen for basic styling)
    </p>
  </div>
  
  <div class="my-5">
    <h2 class="h5">
      1. Change styling of a parent on hover
    </h2>
    <p>
      The hover styling of the card is not set unless the button is hovered. Keep in mind this technique disables the ability to open the image-specific context menu when the image is right-clicked (Thanks Šime Vidas for  <a href="https://twitter.com/simevidas/status/1020867060614811649" target="_blank">pointing that out</a>).
    </p>

    <div class="card change-parent-style">
      <img class="card-img-top" height="180" width="286" alt="100%x180" src="data:image/svg+xml;charset=UTF-8,%3Csvg%20width%3D%22286%22%20height%3D%22180%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20286%20180%22%20preserveAspectRatio%3D%22none%22%3E%3Cdefs%3E%3Cstyle%20type%3D%22text%2Fcss%22%3E%23holder_164b14928b4%20text%20%7B%20fill%3Argba(255%2C255%2C255%2C.75)%3Bfont-weight%3Anormal%3Bfont-family%3AHelvetica%2C%20monospace%3Bfont-size%3A14pt%20%7D%20%3C%2Fstyle%3E%3C%2Fdefs%3E%3Cg%20id%3D%22holder_164b14928b4%22%3E%3Crect%20width%3D%22286%22%20height%3D%22180%22%20fill%3D%22%23777%22%3E%3C%2Frect%3E%3Cg%3E%3Ctext%20x%3D%22107.203125%22%20y%3D%2296.3%22%3E286x180%3C%2Ftext%3E%3C%2Fg%3E%3C%2Fg%3E%3C%2Fsvg%3E">
      <div class="card-body">
        <h5 class="h6 card-title">Card title</h5>
        <p class="card-text">Hover the button below to see the effect in action.</p>
        <button class="btn btn-primary js-btn">
          Hover me
        </button>
      </div>
    </div>
  </div>
  
  <div class="my-5">
    <h2 class="h5">
      2. Change styling of another element
    </h2>
    <p>
      Style the text of the sibling card when the button is hovered.
    </p>
    
    <div class="d-flex flex-wrap change-element-style">

      <div class="card mb-3 mr-3">
        <img class="card-img-top" height="180" width="286" alt="100%x180" src="data:image/svg+xml;charset=UTF-8,%3Csvg%20width%3D%22286%22%20height%3D%22180%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20286%20180%22%20preserveAspectRatio%3D%22none%22%3E%3Cdefs%3E%3Cstyle%20type%3D%22text%2Fcss%22%3E%23holder_164b14928b4%20text%20%7B%20fill%3Argba(255%2C255%2C255%2C.75)%3Bfont-weight%3Anormal%3Bfont-family%3AHelvetica%2C%20monospace%3Bfont-size%3A14pt%20%7D%20%3C%2Fstyle%3E%3C%2Fdefs%3E%3Cg%20id%3D%22holder_164b14928b4%22%3E%3Crect%20width%3D%22286%22%20height%3D%22180%22%20fill%3D%22%23777%22%3E%3C%2Frect%3E%3Cg%3E%3Ctext%20x%3D%22107.203125%22%20y%3D%2296.3%22%3E286x180%3C%2Ftext%3E%3C%2Fg%3E%3C%2Fg%3E%3C%2Fsvg%3E">
        <div class="card-body">
          <h5 class="h6 card-title">Card 1</h5>
          <button class="btn btn-primary js-btn">
            Hover me
          </button>
        </div>
      </div>
      
      <div class="card mb-3 mr-3">
        <img class="card-img-top" height="180" width="286" alt="100%x180" src="data:image/svg+xml;charset=UTF-8,%3Csvg%20width%3D%22286%22%20height%3D%22180%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20286%20180%22%20preserveAspectRatio%3D%22none%22%3E%3Cdefs%3E%3Cstyle%20type%3D%22text%2Fcss%22%3E%23holder_164b14928b4%20text%20%7B%20fill%3Argba(255%2C255%2C255%2C.75)%3Bfont-weight%3Anormal%3Bfont-family%3AHelvetica%2C%20monospace%3Bfont-size%3A14pt%20%7D%20%3C%2Fstyle%3E%3C%2Fdefs%3E%3Cg%20id%3D%22holder_164b14928b4%22%3E%3Crect%20width%3D%22286%22%20height%3D%22180%22%20fill%3D%22%23777%22%3E%3C%2Frect%3E%3Cg%3E%3Ctext%20x%3D%22107.203125%22%20y%3D%2296.3%22%3E286x180%3C%2Ftext%3E%3C%2Fg%3E%3C%2Fg%3E%3C%2Fsvg%3E">
        <div class="card-body">
          <h5 class="h6 card-title">Card 2</h5>
          <p class="card-text element">This text changes color if the button in card 1 is hovered.</p>
        </div>
      </div>
      
    </div>
  </div>
  
  <div class="my-5">
    <h2 class="h5">
      3. Only make the pseudo element clickable
    </h2>
    <p>
      Only the <b class="text-danger">&cross;</b> is clickable. <span class="text-muted small">(Doesn't work in Firefox, see <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=1177528" target="_blank">this bug</a>.)</span>
    </p>
    <button class="btn-x js-btn">
      Filter
    </button>
  </div>
  
  <div class="my-5">
    <h2 class="h5">
      4. Only make the path clickable.
    </h2>
    <p>
      <code>pointer-events: visiblePainted</code> can be used to only make the path interactive.
    </p>
    <svg aria-hidden="true" width="384" height="512" role="img" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 384 512" class="img-fluid"><path fill="currentColor" d="M0 32l34.9 395.8L191.5 480l157.6-52.2L384 32H0zm308.2 127.9H124.4l4.1 49.4h175.6l-13.6 148.4-97.9 27v.3h-1.1l-98.7-27.3-6-75.8h47.7L138 320l53.5 14.5 53.7-14.5 6-62.2H84.3L71.5 112.2h241.1l-4.4 47.7z" class="svg"></path></svg>
    <p class="small">
      Icon from <a href="https://fontawesome.com/icons/html5?style=brands" target="_blank" rel="noopener">Font Awesome</a>
    </p>
  </div>
  
  <div class="mt-5">
    <h2 class="h5">
      That's all folks!
    </h2>
    <p>
      xoxo <a href="https://twitter.com/Martijn_Cuppens">@Martijn_Cuppens</a>
    </p>
    <p class="small mt-4">
      PS. make sure to check out <a href="https://github.com/project-rfs/rfs">RFS</a> to control your responsive font sizes.
    </p>
  </div>
</div>
!

CSS

            
              // Global styling
.card {
  max-width: 286px;
}

.btn {
  // All btns are clickable/hoverable
  pointer-events: auto;
}
// End Global styling


// Example 1:
.change-parent-style {
  pointer-events: none;
  transition: border-color 0.15s ease-in-out;
  
  &:hover {
    border-color: #0069d9;
  }
}
// End Example 1

// Example 2:
.change-element-style {
  pointer-events: none;
  
  &:hover{
    .element {
      color: #28a745;
    }
  }
}
// End Example 2

// Example 3:
.btn-x {
  pointer-events: none;
  font-weight: 700;
  border: none;
  background-color: #e8e8e8;
  border-radius: .2rem;
  padding: .5em .8em;
  cursor: pointer;

  &::after {
    content: '×';
    color: #dc3545;
    pointer-events: auto;
  }
  
  &:focus {
    box-shadow: rgba(0, 123, 255, 0.25) 0px 0px 0px 0.2rem;
    outline: 0;
  }
}
// End Example 3

// Example 4:
.svg {
  pointer-events: visiblePainted;
  transition: fill .15s ease-in-out;
  
  &:hover {
    fill: #fd7e14;
  }
}
// End Example 4
!

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