渡一教育：笑脸动画

发布时间 2025-12-12 17:27:34

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效果预览

此演示仅在桌面端浏览器中可用

html

     html
    
  
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>wanglei.live</title>
    <link rel="stylesheet" href="./index.css" />
  </head>
  <body>
    <div class="container">
      <p>你对我们的印象是</p>
      <div class="face">
        <div class="eye left animate"></div>
        <div class="eye right animate"></div>
        <div class="mouse animate"></div>
      </div>
      <input type="range" min="0" max="1" step="0.1" class="range" />
    </div>
    <script src="./index.js"></script>
  </body>
</html>

js

     js
    
  
const inp = document.querySelector("input");
const container = document.querySelector(".container");

function cal() {
  container.style.setProperty("--progress", inp.value);
}

inp.oninput = cal;
cal();

css

     css
    
  
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  display: flex;
  align-items: center;
  flex-direction: column;
}

.container {
  --progress: 0.5;
  margin: 50px auto;
  display: flex;
  align-items: center;
  flex-direction: column;
  row-gap: 20px;
  font-size: 20px;
  --hue1: calc(120 * var(--progress));
  --hue2: calc(330 + var(--hue1));
  --color1: hsl(var(--hue1), 90%, 55%);
  --color2: hsl(var(--hue2), 90%, 45%);
}

.animate {
  animation-duration: 0.5s;
  animation-delay: calc(var(--progress) * -1s);
  animation-timing-function: linear;
  animation-fill-mode: forwards;
  animation-play-state: paused;
}

.range {
  background-color: #e3e4e8;
  background-image: linear-gradient(to right, var(--color1), var(--color2));
  background-size: calc(100% * var(--progress)) 100%;
  background-repeat: no-repeat;
  border-radius: 0.25em;
  display: block;
  width: 100%;
  height: 0.5em;
  appearance: none; /* 清除默认样式 */
}

/* 拖动按钮 */
.range::-webkit-slider-thumb {
  background-color: #fff;
  border: 0;
  border-radius: 50%;
  box-shadow: 0 0.125em 0.5em hsl(0, 0%, 0%, 0.5);
  width: 1.5em;
  height: 1.5em;
  transition: background-color 0.15s linear;
  --webkit-appearance: none;
  appearance: none;
}

.range:focus::-webkit-slider-thumb,
.range:-webkit-slider-thumb:hover {
  background-color: #efefef;
}

.face {
  width: 80px;
  height: 80px;
  /* 135deg表示从左上到右下的渐变 */
  background-image: linear-gradient(135deg, var(--color1), var(--color2));
  border-radius: 50%;
  margin-bottom: 30px;
  position: relative;
}

.eye {
  position: absolute;
  width: 20%;
  height: 20%;
  background: #fff;
  top: 30%;
  left: 50%;
  border-radius: 50%;
  margin-left: -10%;
}

.eye.left {
  transform: translateX(-90%);
  animation-name: leftEyeChange;
}

.eye.right {
  transform: translateX(90%);
  animation-name: rightEyeChange;
}

@keyframes leftEyeChange {
  0% {
    clip-path: polygon(0 75%, 100% 0, 100% 100%, 0 100%);
  }
  50%,
  100% {
    clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
  }
}

@keyframes rightEyeChange {
  0% {
    clip-path: polygon(0 0, 100% 70%, 100% 100%, 0 100%);
  }
  50%,
  100% {
    clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
  }
}

.mouse {
  position: absolute;
  --w: 32px;
  --h: 32px;
  width: var(--w);
  height: var(--h);
  top: 66px;
  left: 30%;
  border-radius: var(--w);
  box-shadow: inset 0 2px 0 #fff;
  animation-name: mouseChange;
  transform: translateY(calc(var(--h) / -2));
}

@keyframes mouseChange {
  50% {
    height: 4px;
    box-shadow: inset 0 4px 0 #fff;
    transform: translateY(calc(var(--h) / -3));
    clip-path: inset(0% 0% 0% 0%);
  }
  50.1% {
    height: 4px;
    box-shadow: inset 0 -4px 0 #fff;
    transform: translateY(calc(var(--h) / -3));
    clip-path: inset(50% 0% 0% 0%);
  }
  to {
    height: var(--h);
    box-shadow: inset 0 -50px 0 #fff;
    transform: translateY(calc(var(--h) / -1));
    clip-path: inset(50% 0% 0% 0%);
  }
}

#渡一教育 #动画 #裁剪