CSS3 SVG打勾动画

使用 HTML+CSS 建立打勾符号动画。讲解如何使用 SVG 绘画打勾符号，运用两个关键的 CSS 属性 stroke-dasharray & stroke-dashoffset，并通过 CSS Animation 调整 stroke-dashoffset 完成动画。

<input type="checkbox">
<svg width="400" height="400">
  <circle fill="none" stroke="#68E534" stroke-width="20" cx="200" cy="200" r="190" class="circle" stroke-linecap="round" transform="rotate(-90 200 200) "/>
  <polyline fill="none" stroke="#68E534" stroke-width="24" points="88,214 173,284 304,138" stroke-linecap="round" stroke-linejoin="round" class="tick" />
</svg>

<h2>Payment Success</h2>

body {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  flex-direction: column;
}

h2 {
  font-family: Helvetica;
  font-size: 36px;
  margin-top: 40px;
  color: #333;
  opacity: 0;
}

input[type="checkbox"]:checked ~ h2 {
  animation: .6s title ease-in-out;
  animation-delay: 1.2s;
  animation-fill-mode: forwards;
}

.circle {
  stroke-dasharray: 1194;
  stroke-dashoffset: 1194;
}

input[type="checkbox"]:checked + svg .circle {
  animation: circle 1s ease-in-out;
  animation-fill-mode: forwards;
}

.tick {
  stroke-dasharray: 350;
  stroke-dashoffset: 350;
}

input[type="checkbox"]:checked + svg .tick {
  animation: tick .8s ease-out;
  animation-fill-mode: forwards;
  animation-delay: .95s;
}

@keyframes circle {
  from {
    stroke-dashoffset: 1194;
  }
  to {
    stroke-dashoffset: 2388;
  }
}

@keyframes tick {
  from {
    stroke-dashoffset: 350;
  }
  to {
    stroke-dashoffset: 0;
  }
}

@keyframes title {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

教程视频地址