011：vue结合css动画animation实现下雪效果

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1. 实现效果

GIF录屏文件太卡有点卡，实际是很丝滑的

2. 编写一个下雪效果组件 VabSnow.vue

1. 在 src 下新建 components 文件，创建VabSnow.vue组件文件

<template><div class="content" :style="styleObj"><div v-for="(item, index) in 200" :key="index" class="snow"></div></div>
</template><script>export default {name: 'VabSnow',props: {styleObj: {type: Object,default: () => {return {}},},},data() {return {}},created() {},mounted() {},methods: {},}
</script><style lang="scss" scoped>.content {position: relative;width: 100%;height: 100%;overflow: hidden;background: radial-gradient(ellipse at bottom, #1b2735 0%, #090a0f 100%);filter: drop-shadow(0 0 10px white);}@function random_range($min, $max) {$rand: random();$random_range: $min + floor($rand * (($max - $min) + 1));@return $random_range;}.snow {$total: 200;position: absolute;width: 10px;height: 10px;background: white;border-radius: 50%;@for $i from 1 through $total {$random-x: random(1000000) * 0.0001vw;$random-offset: random_range(-100000, 100000) * 0.0001vw;$random-x-end: $random-x + $random-offset;$random-x-end-yoyo: $random-x + ($random-offset / 2);$random-yoyo-time: random_range(30000, 80000) / 100000;$random-yoyo-y: $random-yoyo-time * 100vh;$random-scale: random(10000) * 0.0001;$fall-duration: random_range(10, 30) * 1s;$fall-delay: random(30) * -1s;&:nth-child(#{$i}) {opacity: random(10000) * 0.0001;transform: translate($random-x, -10px) scale($random-scale);animation: fall-#{$i} $fall-duration $fall-delay linear infinite;}@keyframes fall-#{$i} {#{percentage($random-yoyo-time)} {transform: translate($random-x-end, $random-yoyo-y) scale($random-scale);}to {transform: translate($random-x-end-yoyo, 100vh) scale($random-scale);}}}}
</style>

3. 页面使用

<template><div class="home"><div class="body"><VabSnow /></div></div>
</template><script>import VabSnow from '@/components/VabSnow' //引入组件export default {name: 'Demo',components: {VabSnow,},}
</script><style scoped lang="scss">.home {.body {width: 890px;height: 500px;border: #030303 solid 10px;box-sizing: border-box;box-sizing: border-box;}}
</style>

4. 注意点

1. 没啥注意的，主要是scss的变量操作及css动画 😎

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