javascript - 我正在尝试使用 Particle js 让粒子出现在这个网站的主要英雄部分，但它不起作用

Question

我有一个主要英雄部分，我想在其中使用粒子 js 创建效果。我有链接的 particle.js 文件和 app.js 文件以及我自己的主 js 文件，但由于某种原因，粒子没有显示。可能是因为图像没有显示粒子吗？谢谢。

particlesJS('snowfall',

  {
    "particles": {
      "number": {
        "value": 80,
        "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": 0.5,
        "random": false,
        "anim": {
          "enable": false,
          "speed": 1,
          "opacity_min": 0.1,
          "sync": false
        }
      },
      "size": {
        "value": 5,
        "random": true,
        "anim": {
          "enable": false,
          "speed": 40,
          "size_min": 0.1,
          "sync": false
        }
      },
      "line_linked": {
        "enable": true,
        "distance": 150,
        "color": "#ffffff",
        "opacity": 0.4,
        "width": 1
      },
      "move": {
        "enable": true,
        "speed": 6,
        "direction": "none",
        "random": false,
        "straight": false,
        "out_mode": "out",
        "attract": {
          "enable": false,
          "rotateX": 600,
          "rotateY": 1200
        }
      }
    },
    "interactivity": {
      "detect_on": "canvas",
      "events": {
        "onhover": {
          "enable": true,
          "mode": "repulse"
        },
        "onclick": {
          "enable": true,
          "mode": "push"
        },
        "resize": true
      },
      "modes": {
        "grab": {
          "distance": 400,
          "line_linked": {
            "opacity": 1
          }
        },
        "bubble": {
          "distance": 400,
          "size": 40,
          "duration": 2,
          "opacity": 8,
          "speed": 3
        },
        "repulse": {
          "distance": 200
        },
        "push": {
          "particles_nb": 4
        },
        "remove": {
          "particles_nb": 2
        }
      }
    },
    "retina_detect": true,
    "config_demo": {
      "hide_card": false,
      "background_color": "#b61924",
      "background_image": "",
      "background_position": "50% 50%",
      "background_repeat": "no-repeat",
      "background_size": "cover"
    }
  }

);

html {
  font-size: 62.5%;
  width: 100%;
  height: 100%;
}

body {
  margin: 0;
  padding: 0;
  height: 100%;
  font-size: 1.4rem;
}

h1 {
  font-size: 2.4rem;
}

.container-item {
  margin: 0 auto 0;
}

.landing-page-container {
  width: 100%;
  min-height: 100%;
  height: 100vh;
  background-image: linear-gradient(to right, rgba(230, 230, 230, 0.4), rgba(230, 230, 230, 1)), url(ME.jpg);
  /*    background-position: bottom;*/
  background-repeat: no-repeat;
  background-size: cover;
  overflow: hidden;
  display: block;
  font-family: "Montserrat", sans-serif;
  color: #09383E;
  height: 100vh;
}

.content-wrapper {
  max-width: 12000px;
  width: 100%;
  height: 100%;
  margin: 0 auto;
  position: relative;
}


/*.header {*/


/*
    width: 100%;
    height: 2rem;
    padding: 3rem 0;
    display: block;
*/


}
.menu-icon {
  width: 2.5rem;
  height: 1.5rem;
  display: inline-block;
  cursor: pointer;
}
.header-item {
  display: inline-block;
  float: left;
}
.menu-icon-line {
  width: 1.5rem;
  height: .2rem;
  background: #0C383E;
  display: block;
}
.menu-icon-line:before,
.menu-icon-line:after {
  content: '';
  width: 1.5rem;
  height: .2rem;
  background: #0C383E;
  display: inline-block;
  position: relative;
}
.menu-icon-line:before {
  left: .5rem;
  top: -0.6rem;
}
.menu-icon-line:after {
  top: -1.8rem;
}
.heading {
  width: 90%;
  font-size: 2rem;
  font-weight: bold;
  line-height: 1.7rem;
  margin: 0 30px;
  text-align: center;
}
.social-container {
  width: 7.25rem;
  list-style: none;
  overflow: hidden;
  padding: 0;
  margin: 0;
  float: right;
}
.social-container .social-icon {
  width: 1.5rem;
  float: left;
  cursor: pointer;
}
.social-container .social-icon.social-icon-fb {
  margin-left: 1.5rem;
}
.social-container .social-icon.social-icon-tw {
  margin-left: 0;
}
.social-container .social-icon.social-icon-in .fab {
  margin: 0 0 .25rem;
}
.coords {
  font-size: 1rem;
  display: inline-block;
  float: left;
  position: relative;
  top: 40%;
  letter-spacing: .2rem;
  left: -11.5rem;
  margin: 0;
  transform: rotate(-90deg) translateY(50%);
}
.arrow {
  width: 50px;
  position: absolute;
  margin: 0 auto;
  left: 50%;
  top: 65%;
  transform: translate(-50%, -50%);
}
.box {
  position: absolute;
  top: 65%;
  left: 50%;
  transform: translate(-50%, -50%);
}
.box span {
  display: block;
  width: 20px;
  height: 20px;
  border-bottom: 3px solid #fff;
  border-right: 3px solid #fff;
  transform: rotate(45deg);
  margin: -10px;
  /*    animation: animate 2s infinite;*/
  
  animation: animate 2s infinite;
}
.box span:nth-child(2) {
  animation-delay: -0.2s;
  /*    transform: rotate(45deg) translate(-20px, -20px);*/
}
.box span:nth-child(3) {
  animation-delay: -0.4s;
}
@keyframes animate {
  0% {
    opacity: 0;
    transform: rotate(45deg) translate(-20px, -20px);
  }
  
  50% {
    opacity: 1;
  }
  
  100% {
    opacity: 0;
    transform: rotate(45deg) translate(20px, 20px);
  }
  
  0% {
    opacity: 0;
  }
}
.ellipse-container {
  width;
  50rem;
  height: 50rem;
  border-radius: 50%;
  margin: 0 auto;
  position: relative;
  top: 7rem;
}
h2.greeting {
  text-align: center;
  font-size: 6.5rem;
  position: absolute;
  top: 40%;
  left: 50%;
  transform: translate(-50%, -50%);
}

/*NAVBAR*/
.logo {
  line-height: 60px;
  position: fixed;
  float: left;
  margin: 16px 46px;
  color: #fff;
  font-weight: bold;
  font-size: 20px;
  letter-spacing: 2px;
}
nav {
  position: fixed;
  width: 100%;
  line-height: 60px;
}
nav ul {
  line-height: 60px;
  list-style: none;
  background: rgba(0, 0, 0, 0);
  overflow: hidden;
  color: #fff;
  padding: 0;
  text-align: right;
  margin: 0;
  padding-right: 40px;
  transition: .5s;
}
nav.black ul {
  background: #000;
}
nav ul li {
  display: inline-block;
  padding: 16px 40px;
}
nav ul li a {
  text-decoration: none;
  color: #fff;
  font-size: 16px;
}
.menu-icon {
  line-height: 60px;
  width: 100%;
  background: #000;
  text-align: right;
  box-sizing: border-box;
  padding: 15px 24px;
  cursor: pointer;
  color: #fff;
  display: none;
}

   
@media(max-width: 786px) {
  .logo {
    position: fixed;
    top: 0;
    margin-top: 16px;
  }
  nav ul {
    max-height: 0px;
    background: #000;
  }
  nav.black ul {
    background: #000;
  }
  .showing {
    max-height: 34em;
  }
  nav ul li {
    box-sizing: border-box;
    width: 100%;
    padding: 24px;
    text-align: center;
  }
  .menu-icon {
    display: block;
  }
}

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>Everest landing page</title>
  <link rel="stylesheet" href="style.css">
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css">
  <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.0/css/all.css" integrity="sha384-lZN37f5QGtY3VHgisS14W3ExzMWZxybE1SJSEsQp9S+oqd12jhcu+A56Ebc1zFSJ" crossorigin="anonymous">
  <link href="https://fonts.googleapis.com/css?family=Roboto&display=swap" rel="stylesheet">

  <script src="https://code.jquery.com/jquery-3.3.1.js"></script>
  <script src="https://cdn.jsdelivr.net/particles.js/2.0.0/particles.min.js"></script>
</head>

<body>


  <div class="container">
    <div class="container-item landing-page-container" id="snowfall">
      <div class="content-wrapper">
        <header id="header" class="header">

          <nav>
            <div class="menu-icon">
              <i class="fa fa-bars fa-2x"></i>
            </div>

            <div class="logo">LOGO</div>

            <div class="menu">
              <ul>
                <li><a href="#">Home</a></li>
                <li><a href="#">About</a></li>
                <li><a href="#">Blog</a></li>
                <li><a href="#">Contact</a></li>
              </ul>
            </div>
          </nav>

        </header>

        <p class="coords">27.9881° N /86.9250° E</p>

        <!--                <div class="ellipse-container">-->

        <h2 class="greeting">Visit Everest</h2>


        <!--
                    <div class="ellipse ellipse-outer-thin">
                        <div class="ellipse ellipse-orbit"></div>


                    </div>
-->

        <div class="ellipse ellipse-outer-thick"></div>



      </div>

      <!--                <img class="arrow" src="arrow.svg" alt="Down arrow">-->


      <div class="box">
        <span></span>
        <span></span>
        <span></span>


      </div>



    </div>

    <!--<script src="js/particles.js"></script>
<script src="js/app.js"></script>

<script src="js/script.js" defer="defer"></script>-->

</body>



</html>

英雄部分的 ID 为“snowfall”。

Answer 1

尝试在加载 main.js 之前加载 particles.js 文件
引用:https://stackoverflow.com/a/38271176/11932228