SVG line drawing animation

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</div>

script.js

var pathEls = document.querySelectorAll('path');
for (var i = 0; i < pathEls.length; i++) {
  var pathEl = pathEls[i];
  var offset = anime.setDashoffset(pathEl);
  pathEl.setAttribute('stroke-dashoffset', offset);
  anime({
    targets: pathEl,
    strokeDashoffset: [offset, 0],
    duration: anime.random(1000, 3000),
    delay: anime.random(0, 2000),
    loop: true,
    direction: 'alternate',
    easing: 'easeInOutSine',
    autoplay: true
  });
}

scripts

<script src="https://codepen.io/juliangarnier/pen/yMLaRG.js"></script>

style.css

body {
  display: flex;
  align-items: center;
  justify-content: center;
  position: absolute;
  overflow: hidden;
  width: 100%;
  height: 100%;
}
.anim, .anim svg {
  position: relative;
  width: 100%;
  height: 100%;
}
.anim path {
  stroke-width: 2;
}

styles

<link href="https://codepen.io/juliangarnier/pen/EWxgGx.css" rel="stylesheet" />

svg-line-drawing-animation.markdown

SVG line drawing animation

A Pen by Julian Garnier on CodePen.

License.