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css制作波纹

2026-02-27 07:30:18CSS

使用CSS制作波纹效果

通过CSS的animation和transform属性可以轻松实现波纹效果，以下是两种常见方法：

方法一：利用伪元素和`scale`动画

通过伪元素创建圆形背景，并用动画控制其缩放和透明度变化。

<div class="ripple-button">点击我</div>

.ripple-button {
  position: relative;
  overflow: hidden;
  padding: 12px 24px;
  background-color: #6200ea;
  color: white;
  border: none;
  cursor: pointer;
}

.ripple-button::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 5px;
  height: 5px;
  background: rgba(255, 255, 255, 0.5);
  opacity: 0;
  border-radius: 50%;
  transform: translate(-50%, -50%) scale(1);
}

.ripple-button:active::after {
  animation: ripple 0.6s ease-out;
}

@keyframes ripple {
  to {
    transform: translate(-50%, -50%) scale(20);
    opacity: 0;
  }
}

方法二：通过JavaScript动态添加波纹元素

结合CSS和JavaScript实现更灵活的交互效果。

<button class="js-ripple-button">点击触发波纹</button>

.ripple {
  position: absolute;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.7);
  transform: scale(0);
  animation: ripple-animation 0.6s linear;
  pointer-events: none;
}

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

document.querySelector('.js-ripple-button').addEventListener('click', function(e) {
  const ripple = document.createElement('span');
  ripple.classList.add('ripple');
  this.appendChild(ripple);

  const rect = e.target.getBoundingClientRect();
  const x = e.clientX - rect.left;
  const y = e.clientY - rect.top;

  ripple.style.left = `${x}px`;
  ripple.style.top = `${y}px`;

  setTimeout(() => ripple.remove(), 600);
});