javascript - 分散多个图像元素html的更快方法

Question

我是动画新手，我目前正在尝试实现下面的效果:但是因为我想制作这些星星的动画，使其在您将鼠标悬停在它们上方时摆动，我发现我需要手动插入每颗星星，而不仅仅是插入这个全貌。有没有更快/更有效的方法来解决这个问题？我应该为此编写一个插入 js 函数吗？谢谢!

Answer 1

您可能需要 Particles.js

A lightweight JavaScript library for creating particles.

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用法很简单。

1. 从 CDN 或本地加载库。我用过

   <script src="https://cdnjs.cloudflare.com/ajax/libs/particles.js/2.0.0/particles.min.js"></script>

2. 使用 id="particles-js" 为粒子创建一个容器

3. 这样设计:

   #particles-js {
width: 100vw;
height: 100vh;
overflow: hidden;
}

4. 转到 the official page并设置你想要的任何设置

5. 将设置导出为 json

6. 在 <script> 中添加 json 内容在您的文档中添加标签。

响应式交互式演示:

particlesJS("particles-js", {
  "particles": {
    "number": {
      "value": 200,
      "density": {
        "enable": true,
        "value_area": 800
      }
    },
    "color": {
      "value": "#ffffff"
    },
    "shape": {
      "type": "star",
      "stroke": {
        "width": 0,
        "color": "#000000"
      },
      "polygon": {
        "nb_sides": 5
      },
      "image": {
        "src": "img/github.svg",
        "width": 35,
        "height": 35
      }
    },
    "opacity": {
      "value": 0.35,
      "random": true,
      "anim": {
        "enable": true,
        "speed": .5,
        "opacity_min": 0.1,
        "sync": false
      }
    },
    "size": {
      "value": 4,
      "random": true,
      "anim": {
        "enable": false,
        "speed": 40,
        "size_min": 0.1,
        "sync": false
      }
    },
    "line_linked": {
      "enable": false,
      "distance": 150,
      "color": "#ffffff",
      "opacity": 0.1,
      "width": 1
    },
    "move": {
      "enable": true,
      "speed": .5,
      "direction": "none",
      "random": true,
      "straight": false,
      "out_mode": "out",
      "bounce": false,
      "attract": {
        "enable": true,
        "rotateX": 4024.6529723245903,
        "rotateY": 1200
      }
    }
  },
  "interactivity": {
    "detect_on": "canvas",
    "events": {
      "onhover": {
        "enable": true,
        "mode": "bubble"
      },
      "onclick": {
        "enable": true,
        "mode": "repulse"
      },
      "resize": true
    },
    "modes": {
      "grab": {
        "distance": 400,
        "line_linked": {
          "opacity": 1
        }
      },
      "bubble": {
        "distance": 150,
        "size": 5,
        "duration": 8,
        "opacity": .2,
        "speed": 3
      },
      "repulse": {
        "distance": 100,
        "duration": 5
      },
      "push": {
        "particles_nb": 2
      },
      "remove": {
        "particles_nb": 2
      }
    }
  },
  "retina_detect": true

});

* {
  margin: 0;
  padding: 0;
}

#particles-js {
  width: 100vw;
  height: 100vh;
  overflow: hidden;
}

.stars,
.twinkle {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: block;
  z-index: -10;
}

.stars {
  background: #000 url(/image/SyeSl.png) repeat top center;
  z-index: -1;
}

.twinkle {
  background: transparent url(/image/q9Sz6.png) repeat top center;
  z-index: -1;
  animation: stars 1000s linear infinite;
}

@keyframes stars {
  from {
    background-position: 0 0;
  }
  to {
    background-position: -10000px 5000px;
  }
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/particles.js/2.0.0/particles.min.js"></script>

<div id="particles-js"></div>
<div class="stars"></div>
<div class="twinkle"></div>

如果喜欢非交互式的东西，因为它可能具有更好的整体性能，可以实现更简单的版本，如下所示:

* {
  margin: 0;
  padding: 0;
}

.stars,
.twinkle {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: block;
  z-index: -10;
}

.stars {
  background: #000 url(/image/SyeSl.png) repeat top center;
  z-index: -1;
}

.twinkle {
  background: transparent url(/image/q9Sz6.png) repeat top center;
  z-index: -1;
  animation: stars 1000s linear infinite;
}

@keyframes stars {
  from {
    background-position: 0 0;
  }
  to {
    background-position: -10000px 5000px;
  }
}

<div class="stars"></div>
<div class="twinkle"></div>

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注意:背景中的小星星无耻偷自a pen by Annaliza Torres