Vue使用js鼠标蜘蛛特效

1. 在src下新建文件夹utils，里面新建文件canvas-nest.js，将代码复制进去。（可以自己定义存放路径）

  !function() {
      function n(n, e, t) {
          return n.getAttribute(e) || t
      }
      function e(n) {
          return document.getElementsByTagName(n)
      }
      function t() {
          var t = e("script"),
          o = t.length,
          i = t[o - 1];
          return {
              l: o,
              z: n(i, "zIndex", -1),
              o: n(i, "opacity", .9),   //透明度
              c: n(i, "color", "255, 102, 153"),   //颜色
              n: n(i, "count", 99)
          }
      }
      function o() {
          a = m.width = window.innerWidth || document.documentElement.clientWidth || document.body.clientWidth,
          c = m.height = window.innerHeight || document.documentElement.clientHeight || document.body.clientHeight
      }
      function i() {
          r.clearRect(0, 0, a, c);
          var n, e, t, o, m, l;
          s.forEach(function(i, x) {
              for (i.x += i.xa, i.y += i.ya, i.xa *= i.x > a || i.x < 0 ? -1 : 1, i.ya *= i.y > c || i.y < 0 ? -1 : 1, r.fillRect(i.x - .5, i.y - .5, 1, 1), e = x + 1; e < u.length; e++) n = u[e],
              null !== n.x && null !== n.y && (o = i.x - n.x, m = i.y - n.y, l = o * o + m * m, l < n.max && (n === y && l >= n.max / 2 && (i.x -= .03 * o, i.y -= .03 * m), t = (n.max - l) / n.max, r.beginPath(), r.lineWidth = t / 2, r.strokeStyle = "rgba(" + d.c + "," + (t + .2) + ")", r.moveTo(i.x, i.y), r.lineTo(n.x, n.y), r.stroke()))
          }),
          x(i)
      }
      var a, c, u, m = document.createElement("canvas"),
      d = t(),
      l = "c_n" + d.l,
      r = m.getContext("2d"),
      x = window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || window.oRequestAnimationFrame || window.msRequestAnimationFrame ||
      function(n) {
          window.setTimeout(n, 1e3 / 45)
      },
      w = Math.random,
      y = {
          x: null,
          y: null,
          max: 2e4
      };
      m.id = l,
      m.style.cssText = "position:fixed;top:0;left:0;z-index:" + d.z + ";opacity:" + d.o,
      e("body")[0].appendChild(m),
      o(),
      window.onresize = o,
      window.onmousemove = function(n) {
          n = n || window.event,
          y.x = n.clientX,
          y.y = n.clientY
      },
      window.onmouseout = function() {
          y.x = null,
          y.y = null
      };
      for (var s = [], f = 0; d.n > f; f++) {
          var h = w() * a,
          g = w() * c,
          v = 2 * w() - 1,
          p = 2 * w() - 1;
          s.push({
              x: h,
              y: g,
              xa: v,
              ya: p,
              max: 6e3
          })
      }
      u = s.concat([y]),
      setTimeout(function() {
          i()
      },
      100)
  } ();

2. 在app.vue里面导入使用

<template>
  <div id="app">
    
  </div>
</template>

<script>

import Canvas from './utils/canvas-nest.js'
export default {
  name: 'app',
  components: {
    Canvas
  }

}
</script>

<style>
canvas{
    background: rgb(226, 225, 225);
    opacity: 0.3;
}
</style>

3. 预览