小手点击水波纹效果js

<button class="ripple-button">Click Me</button>

.ripple-button {
  position: relative;
  overflow: hidden;
  padding: 10px 20px;
  border: none;
  background-color: #007bff;
  color: white;
  cursor: pointer;
}

.ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.7);
  transform: scale(0);
  animation: ripple-animation 0.6s linear;
}

@keyframes ripple-animation {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

document.querySelectorAll('.ripple-button').forEach(button => {
  button.addEventListener('click', function (e) {
    const circle = document.createElement('span');
    const diameter = Math.max(button.clientWidth, button.clientHeight);
    const radius = diameter / 2;

    circle.style.width = circle.style.height = `${diameter}px`;
    circle.style.left = `${e.clientX - button.offsetLeft - radius}px`;
    circle.style.top = `${e.clientY - button.offsetTop - radius}px`;
    circle.classList.add('ripple');

    const ripple = button.getElementsByClassName('ripple')[0];
    if (ripple) {
      ripple.remove();
    }
    button.appendChild(circle);
  });
});