compare to the previous example

compare-to-the-previous-example.markdown

compare to the previous example

A Pen by joncreative on CodePen.

License.

index.html

<style>
  .ba-comparison-widget * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }

  .ba-comparison-widget {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
  }

  .ba-main-wrapper {
    max-width: 1200px;
    margin: 0 auto;
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    overflow: hidden;
  }

  .ba-hero-section {
    text-align: center;
    padding: 40px 20px;
    background: linear-gradient(135deg, #2c3e50, #34495e);
    color: white;
  }

  .ba-hero-section h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    font-weight: 700;
  }

  .ba-hero-section p {
    font-size: 1.2rem;
    opacity: 0.9;
  }

  .ba-content-area {
    padding: 40px;
    position: relative;
  }

  /* Desktop Slider View */
  .ba-desktop-slider {
    position: relative;
    width: 100%;
    height: 800px;
    overflow: hidden;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    cursor: col-resize;
  }

  .ba-before-img,
  .ba-after-img {
    position: absolute;
    top: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    transition: all 0.3s ease;
  }

  .ba-before-img {
    background-image: linear-gradient(45deg, #ff6b6b, #ee5a52);
    background-size: cover;
    z-index: 1;
  }

  .ba-after-img {
    background-image: linear-gradient(45deg, #4ecdc4, #44a08d);
    background-size: cover;
    z-index: 2;
    clip-path: inset(0 50% 0 0);
  }

  /* Mock content for demonstration */
  .ba-img-content {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: white;
    font-size: 2rem;
    font-weight: bold;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
  }

  .ba-drag-handle {
    position: absolute;
    top: 0;
    left: 50%;
    width: 4px;
    height: 100%;
    background: white;
    z-index: 10;
    transform: translateX(-50%);
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
  }

  .ba-drag-handle::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 40px;
    height: 40px;
    background: white;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .ba-drag-handle::after {
    content: '⟷';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #333;
    font-size: 16px;
    font-weight: bold;
  }

  /* Mobile Toggle View */
  .ba-mobile-toggle {
    display: none;
  }

  .ba-toggle-btns {
    display: flex;
    margin-bottom: 20px;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  }

  .ba-toggle-btn {
    flex: 1;
    padding: 15px 20px;
    background: #f8f9fa;
    border: none;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
  }

  .ba-toggle-btn.ba-active {
    background: #007bff;
    color: white;
  }

  .ba-toggle-display {
    width: 100%;
    height: 700px;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  }

  /* Callouts */
  .ba-callout {
    position: absolute;
    background: rgba(255, 255, 255, 0.95);
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    color: #333;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(10px);
    border-left: 4px solid #007bff;
    max-width: 200px;
    z-index: 5;
    transition: all 0.3s ease;
  }

  .ba-callout::before {
    content: '';
    position: absolute;
    width: 12px;
    height: 12px;
    background: #007bff;
    border-radius: 50%;
    transform: translate(-50%, -50%);
  }

  .ba-callout-1 {
    top: 20%;
    left: 25%;
  }

  .ba-callout-1::before {
    top: -6px;
    left: -10px;
  }

  .ba-callout-2 {
    top: 60%;
    right: 20%;
  }

  .ba-callout-2::before {
    top: -6px;
    right: -10px;
  }

  .ba-callout-3 {
    bottom: 20%;
    left: 30%;
  }

  .ba-callout-3::before {
    bottom: -6px;
    left: -10px;
  }

  /* Stats Section */
  .ba-stats-area {
    background: #f8f9fa;
    padding: 40px;
    text-align: center;
  }

  .ba-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-top: 30px;
  }

  .ba-stat-card {
    background: white;
    padding: 25px;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
  }

  .ba-stat-card:hover {
    transform: translateY(-5px);
  }

  .ba-stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: #007bff;
    display: block;
  }

  .ba-stat-desc {
    color: #666;
    font-size: 1.1rem;
    margin-top: 5px;
  }

  /* Responsive Design */
  @media (max-width: 768px) {
    .ba-desktop-slider {
      display: none;
    }

    .ba-mobile-toggle {
      display: block;
    }

    .ba-hero-section h1 {
      font-size: 2rem;
    }

    .ba-content-area {
      padding: 20px;
    }

    .ba-callout {
      font-size: 0.8rem;
      padding: 8px 12px;
      max-width: 150px;
    }

    .ba-stats-grid {
      grid-template-columns: 1fr;
      gap: 20px;
    }

    .ba-stat-value {
      font-size: 2rem;
    }

    .ba-comparison-widget {
      padding: 10px;
      min-height: auto;
    }
  }

  /* Accessibility */
  .ba-desktop-slider:focus {
    outline: 3px solid #007bff;
    outline-offset: 2px;
  }

  .ba-toggle-btn:focus {
    outline: 2px solid #007bff;
    outline-offset: 2px;
  }

  /* Animation for smooth transitions */
  .ba-fade-in {
    animation: baFadeIn 0.5s ease-in;
  }

  @keyframes baFadeIn {
    from {
      opacity: 0;
      transform: translateY(20px);
    }

    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
</style>
</head>

<body>
  <div class="ba-comparison-widget">
    <div class="ba-main-wrapper">
      <div class="ba-hero-section">
        <h1>Before vs After</h1>
        <p>See the transformation in action</p>
      </div>

      <div class="ba-content-area">
        <!-- Desktop Slider View -->
        <div class="ba-desktop-slider" id="baSliderContainer" tabindex="0" role="img" aria-label="Before and after comparison slider">
          <div class="ba-before-img">
            <div class="ba-img-content">
              <div>
                <h3>BEFORE</h3>
                <p style="font-size: 1rem; margin-top: 10px;">Old Design</p>
              </div>
            </div>
          </div>
          <div class="ba-after-img" id="baAfterImage">
            <div class="ba-img-content">
              <div>
                <h3>AFTER</h3>
                <p style="font-size: 1rem; margin-top: 10px;">New & Improved</p>
              </div>
            </div>
          </div>
          <div class="ba-drag-handle" id="baSliderHandle"></div>

          <!-- Callouts for Desktop -->
          <div class="ba-callout ba-callout-1" id="baCallout1">
            <strong>Tiny Text</strong><br>
            Hard to read on mobile
          </div>
          <div class="ba-callout ba-callout-2" id="baCallout2">
            <strong>Cluttered Layout</strong><br>
            Information overload
          </div>
          <div class="ba-callout ba-callout-3" id="baCallout3">
            <strong>Poor Contrast</strong><br>
            Accessibility issues
          </div>
        </div>

        <!-- Mobile Toggle View -->
        <div class="ba-mobile-toggle">
          <div class="ba-toggle-btns">
            <button class="ba-toggle-btn ba-active" id="baBeforeBtn" aria-pressed="true">Before</button>
            <button class="ba-toggle-btn" id="baAfterBtn" aria-pressed="false">After</button>
          </div>
          <div class="ba-toggle-display" id="baToggleImage">
            <div class="ba-before-img">
              <div class="ba-img-content">
                <div>
                  <h3>BEFORE</h3>
                  <p style="font-size: 1rem; margin-top: 10px;">Old Design</p>
                </div>
              </div>
            </div>
            <!-- Mobile Callouts -->
            <div class="ba-callout ba-callout-1" id="baMobileCallout1">
              <strong>Tiny Text</strong><br>
              Hard to read
            </div>
            <div class="ba-callout ba-callout-2" id="baMobileCallout2">
              <strong>Cluttered</strong><br>
              Too much info
            </div>
          </div>
        </div>
      </div>

      <div class="ba-stats-area">
        <h2 style="font-size: 2rem; margin-bottom: 10px; color: #333;">Proven Results</h2>
        <p style="color: #666; font-size: 1.1rem;">Real improvements, measurable impact</p>

        <div class="ba-stats-grid">
          <div class="ba-stat-card">
            <span class="ba-stat-value">73%</span>
            <div class="ba-stat-desc">Better User Experience</div>
          </div>
          <div class="ba-stat-card">
            <span class="ba-stat-value">2.4x</span>
            <div class="ba-stat-desc">Faster Load Times</div>
          </div>
          <div class="ba-stat-card">
            <span class="ba-stat-value">89%</span>
            <div class="ba-stat-desc">Mobile Optimization</div>
          </div>
          <div class="ba-stat-card">
            <span class="ba-stat-value">95%</span>
            <div class="ba-stat-desc">Accessibility Score</div>
          </div>
        </div>
      </div>
    </div>
  </div>

  <script>
    (function() {
      // Desktop Slider Functionality
      const sliderContainer = document.getElementById('baSliderContainer');
      const afterImage = document.getElementById('baAfterImage');
      const sliderHandle = document.getElementById('baSliderHandle');
      const callout1 = document.getElementById('baCallout1');
      const callout2 = document.getElementById('baCallout2');
      const callout3 = document.getElementById('baCallout3');
      let isDragging = false;
      let currentPosition = 50; // Start at 50%
      function updateSlider(percentage) {
        percentage = Math.max(0, Math.min(100, percentage));
        currentPosition = percentage;
        // Update after image clip-path
        afterImage.style.clipPath = `inset(0 ${100 - percentage}% 0 0)`;
        // Update slider handle position
        sliderHandle.style.left = `${percentage}%`;
        // Update callouts based on position
        updateCallouts(percentage);
      }

      function updateCallouts(percentage) {
        if (percentage < 30) {
          // Mostly "before" showing
          callout1.innerHTML = '<strong>Tiny Text</strong><br>Hard to read on mobile';
          callout2.innerHTML = '<strong>Cluttered Layout</strong><br>Information overload';
          callout3.innerHTML = '<strong>Poor Contrast</strong><br>Accessibility issues';
        } else if (percentage > 70) {
          // Mostly "after" showing
          callout1.innerHTML = '<strong>Large Text</strong><br>Easy to read anywhere';
          callout2.innerHTML = '<strong>Clean Design</strong><br>Focused experience';
          callout3.innerHTML = '<strong>High Contrast</strong><br>WCAG compliant';
        } else {
          // Transition state
          callout1.innerHTML = '<strong>Text Size</strong><br>Before vs After';
          callout2.innerHTML = '<strong>Layout</strong><br>Comparing designs';
          callout3.innerHTML = '<strong>Accessibility</strong><br>Major improvement';
        }
      }
      // Mouse events
      sliderContainer.addEventListener('mousedown', (e) => {
        isDragging = true;
        updateSliderPosition(e);
      });
      sliderContainer.addEventListener('mousemove', (e) => {
        if (isDragging) {
          updateSliderPosition(e);
        }
      });
      document.addEventListener('mouseup', () => {
        isDragging = false;
      });
      // Touch events for mobile
      sliderContainer.addEventListener('touchstart', (e) => {
        e.preventDefault();
        isDragging = true;
        updateSliderPosition(e.touches[0]);
      });
      sliderContainer.addEventListener('touchmove', (e) => {
        e.preventDefault();
        if (isDragging) {
          updateSliderPosition(e.touches[0]);
        }
      });
      sliderContainer.addEventListener('touchend', () => {
        isDragging = false;
      });
      // Keyboard accessibility
      sliderContainer.addEventListener('keydown', (e) => {
        switch (e.key) {
          case 'ArrowLeft':
            e.preventDefault();
            updateSlider(currentPosition - 5);
            break;
          case 'ArrowRight':
            e.preventDefault();
            updateSlider(currentPosition + 5);
            break;
          case 'Home':
            e.preventDefault();
            updateSlider(0);
            break;
          case 'End':
            e.preventDefault();
            updateSlider(100);
            break;
        }
      });

      function updateSliderPosition(event) {
        const rect = sliderContainer.getBoundingClientRect();
        const x = event.clientX - rect.left;
        const percentage = (x / rect.width) * 100;
        updateSlider(percentage);
      }
      // Mobile Toggle Functionality
      const beforeBtn = document.getElementById('baBeforeBtn');
      const afterBtn = document.getElementById('baAfterBtn');
      const toggleImage = document.getElementById('baToggleImage');

      function showBefore() {
        beforeBtn.classList.add('ba-active');
        afterBtn.classList.remove('ba-active');
        beforeBtn.setAttribute('aria-pressed', 'true');
        afterBtn.setAttribute('aria-pressed', 'false');
        toggleImage.innerHTML = `
                    <div class="ba-before-img">
                        <div class="ba-img-content">
                            <div>
                                <h3>BEFORE</h3>
                                <p style="font-size: 1rem; margin-top: 10px;">Old Design</p>
                            </div>
                        </div>
                    </div>
                    <div class="ba-callout ba-callout-1">
                        <strong>Tiny Text</strong><br>
                        Hard to read
                    </div>
                    <div class="ba-callout ba-callout-2">
                        <strong>Cluttered</strong><br>
                        Too much info
                    </div>
                `;
        toggleImage.classList.add('ba-fade-in');
      }

      function showAfter() {
        afterBtn.classList.add('ba-active');
        beforeBtn.classList.remove('ba-active');
        afterBtn.setAttribute('aria-pressed', 'true');
        beforeBtn.setAttribute('aria-pressed', 'false');
        toggleImage.innerHTML = `
                    <div class="ba-after-img" style="clip-path: none;">
                        <div class="ba-img-content">
                            <div>
                                <h3>AFTER</h3>
                                <p style="font-size: 1rem; margin-top: 10px;">New & Improved</p>
                            </div>
                        </div>
                    </div>
                    <div class="ba-callout ba-callout-1">
                        <strong>Large Text</strong><br>
                        Easy to read
                    </div>
                    <div class="ba-callout ba-callout-2">
                        <strong>Clean Design</strong><br>
                        Focused UI
                    </div>
                `;
        toggleImage.classList.add('ba-fade-in');
      }
      beforeBtn.addEventListener('click', showBefore);
      afterBtn.addEventListener('click', showAfter);
      // Initialize
      updateSlider(50);
      // Remove animation class after animation completes
      toggleImage.addEventListener('animationend', () => {
        toggleImage.classList.remove('ba-fade-in');
      });
    })();
  </script>