效果图：

nfex.gif

代码如下：

<template>
  <div class="overall">
    <div class="box">
      <svg id="one" width="500" height="300" xmlns="http://www.w3.org/2000/svg">
        <g>
          <path
            id="svg_3"
            d="m81.25019,99.72662l-0.25028,100.27314l19.99998,0l0,-60.49993l39.99995,60.49993l19.99998,0l0,-100.49988l-19.99998,0l0,60.49993l-39.99995,-60.49993l-19.74969,0.22674z"
            fill-opacity="null"
            stroke-opacity="null"
            stroke-width="1.5"
            stroke="#224464"
            fill="#f0f0f0"
          />
          <path
            id="svg_4"
            d="m181.75007,100.72663l59.24964,-0.22674l0,20.49998l-38.99995,0l0,19.99998l39.99995,0l0,19.99998l-41.49995,0l0,39.49995l-18.99998,0l0.25029,-99.77314z"
            fill-opacity="null"
            stroke-opacity="null"
            stroke-width="1.5"
            stroke="#0A6856"
            fill="#f0f0f0"
          />
          <path
            id="svg_5"
            d="m261.74998,101.22662l59.74964,-0.22674l0,19.49998l-39.99995,0l0,19.49998l39.99995,0l0,20.49998l-40.49995,0l0,20.49998l40.49995,0l0,19.49998l-59.99993,0l0.25029,-99.27314z"
            fill-opacity="null"
            stroke-opacity="null"
            stroke-width="1.5"
            stroke="#209680"
            fill="#f0f0f0"
          />
          <path
            id="svg_13"
            d="m340.7499,100.72663l19.74968,-0.22674l59.99993,99.49988l-19.99998,0l-59.74963,-99.27314z"
            fill-opacity="null"
            stroke-opacity="null"
            stroke-width="1.5"
            stroke="#0A6856"
            fill="#f0f0f0"
          />
          <path
            id="svg_14"
            d="m340.7499,200.22651l19.74968,-0.22675l60.49993,-99.49988l-20.49998,0l-59.74963,99.72663z"
            fill-opacity="null"
            stroke-opacity="null"
            stroke-width="1.5"
            stroke="#209680"
            fill="#f0f0f0"
          />
        </g>
      </svg>
      <svg id="two" width="500" height="300" xmlns="http://www.w3.org/2000/svg">
        <g>
          <path
            id="svg_3"
            d="m81.25019,99.72662l-0.25028,100.27314l19.99998,0l0,-60.49993l39.99995,60.49993l19.99998,0l0,-100.49988l-19.99998,0l0,60.49993l-39.99995,-60.49993l-19.74969,0.22674z"
            fill-opacity="null"
            stroke-opacity="null"
            stroke-width="1.5"
            stroke="#224464"
            fill="#224464"
          />
          <path
            id="svg_4"
            d="m181.75007,100.72663l59.24964,-0.22674l0,20.49998l-38.99995,0l0,19.99998l39.99995,0l0,19.99998l-41.49995,0l0,39.49995l-18.99998,0l0.25029,-99.77314z"
            fill-opacity="null"
            stroke-opacity="null"
            stroke-width="1.5"
            stroke="#0A6856"
            fill="#0A6856"
          />
          <path
            id="svg_5"
            d="m261.74998,101.22662l59.74964,-0.22674l0,19.49998l-39.99995,0l0,19.49998l39.99995,0l0,20.49998l-40.49995,0l0,20.49998l40.49995,0l0,19.49998l-59.99993,0l0.25029,-99.27314z"
            fill-opacity="null"
            stroke-opacity="null"
            stroke-width="1.5"
            stroke="#209680"
            fill="#209680"
          />
          <path
            id="svg_13"
            d="m340.7499,100.72663l19.74968,-0.22674l59.99993,99.49988l-19.99998,0l-59.74963,-99.27314z"
            fill-opacity="null"
            stroke-opacity="null"
            stroke-width="1.5"
            stroke="#0A6856"
            fill="#0A6856"
          />
          <path
            id="svg_14"
            d="m340.7499,200.22651l19.74968,-0.22675l60.49993,-99.49988l-20.49998,0l-59.74963,99.72663z"
            fill-opacity="null"
            stroke-opacity="null"
            stroke-width="1.5"
            stroke="#209680"
            fill="#209680"
          />
        </g>
      </svg>
    </div>
  </div>
</template>

<script>
import anime from "animejs/lib/anime.es.js";
export default {
  mounted() {
    let path_one = document.querySelectorAll("#one path");
    let path_two = document.querySelectorAll("#two path");
    for (let i = 0; i < path_one.length; i++) {
      anime({
        targets: path_one[i],
        delay: i * 100,
        strokeDashoffset: [anime.setDashoffset, 0],
        easing: "easeInOutSine",
        duration: 1000,
        loop: 1,
        complete: function() {
          anime({
            targets: path_two[i],
            delay:i*100,
            opacity: 1
          });
        }
      });
    }
  }
};
</script>

<style lang="scss" scoped>
.overall {
  background: #f0f0f0;
}
.box {
  width: 500px;
  height: 300px;
  position: relative;
  svg {
    position: absolute;
    left: 0;
    top: 0;
  }
}
path {
  stroke-width: 3px;
}
#two {
  path {
    opacity: 0;
  }
}
</style>