1.安装particlesJS

npm install --save particles.js

2.创建particles.json文件，设置particles的配置参数

 {
  "particles": {
    "number": {
      "value": 40,
      "density": {
        "enable": true,
        "value_area": 800
      }
    },
    "color": {
      "value": "#ffffff"
    },
    "shape": {
      "type": "circle",
      "stroke": {
        "width": 0,
        "color": "#000000"
      },
      "polygon": {
        "nb_sides": 5
      },
      "image": {
        "src": "img/github.svg",
        "width": 100,
        "height": 100
      }
    },
    "opacity": {
      "value": 0.7,
      "random": false,
      "anim": {
        "enable": false,
        "speed": 1,
        "opacity_min": 0.1,
        "sync": false
      }
    },
    "size": {
      "value": 3,
      "random": true,
      "anim": {
        "enable": false,
        "speed": 40,
        "size_min": 0.1,
        "sync": false
      }
    },
    "line_linked": {
      "enable": true,
      "distance": 150,
      "color": "#ffffff",
      "opacity": 0.6,
      "width": 1
    },
    "move": {
      "enable": true,
      "speed": 6,
      "direction": "none",
      "random": false,
      "straight": false,
      "out_mode": "out",
      "bounce": false,
      "attract": {
        "enable": false,
        "rotateX": 600,
        "rotateY": 1200
      }
    }
  },
  "interactivity": {
    "detect_on": "canvas",
    "events": {
      "onhover": {
        "enable": true,
        "mode": "grab"
      },
      "onclick": {
        "enable": true,
        "mode": "push"
      },
      "resize": true
    },
    "modes": {
      "grab": {
        "distance": 200,
        "line_linked": {
          "opacity": 1
        }
      },
      "bubble": {
        "distance": 400,
        "size": 40,
        "duration": 2,
        "opacity": 8,
        "speed": 3
      },
      "repulse": {
        "distance": 200,
        "duration": 0.4
      },
      "push": {
        "particles_nb": 4
      },
      "remove": {
        "particles_nb": 2
      }
    }
  },
  "retina_detect": false
}

3.创建styleOflogin.css文件，设置div背景颜色或图片

 #particles-js{
        width: 100%;
        height: 100%;
        position: relative;
        background-image: url(../images/bg.jpg);
        background-position: 50% 50%;
        background-size: cover;
        background-repeat: no-repeat;
        margin-left: auto;
        margin-right: auto;
    }

4.引入（局部引入）

 <style scoped>
  @import "../../public/css/styleOflogin.css";
</style>
<template>
  <div style="min-height:730px; height:100px">
    <div id="particles-js"></div>
  </div>
</template>

<script>
  import particlesJs from "particles.js";
  import particlesConfig from "./particles.json";
  export default {
    data() {
      return {};
    },
    mounted() {
    	particlesJS("particles-js", particlesConfig);
    },
  };

5.效果图

参考文章
https://www.cnblogs.com/wangyihong/p/8618305.html