组件代码

• Battery.vue

<template>
	<div class="battery">
		<div class="conver" :style="{'--progress': progress + '%'}">
		</div>
		<div class="num">{{parseFloat(progress).toFixed(2)+'%'}}</div>
	</div>
</template>

<script>
export default {
	props: {
		progress:{  // 外部传入组件内的参数 根据需求可以多定义几个，用法跟再data中定义progress属性一样
			type:Number,
			default:0
		}
	},
	data(){
		return {
			// progress:"50%"
		}
	}
}
</script>

<style scoped>
	.num{
		z-index: 2;
		color: #fff;
		font-size: 24px;
	}
	.battery{
		position: relative;
		display: flex;
		justify-content: center;
		align-items: center;
		width: 100px;
		height: 100px;
		background-color: white;
		border-radius: 50%;
	}
	/* .battery::before{
		content: '';
		position: absolute;
		top: -20px;
		left: 37%;
		width: 50px;
		height: 20px;
		background-color: white;
		border-radius: 5px 5px 0 0;
	} */
	.battery::after{
		content: '';
		position: absolute;
		left: 0;
		right: 0;
		bottom: 0;
		background-color: #4bb520;
		border-radius: 50%;
		/* background-image: linear-gradient(to bottom, #57fa72 0%, #51ea6b 44%, #4CD964 100%); */
		top:0%
		/* animation: charge 10s linear infinite; */
	}
	/* @keyframes charge{
		0%{
			top: 100%;
			filter: hue-rotate(40deg);
		}
		95%{
			top: 5%;
			border-radius: 0px;
		}
		100%{
			top: 0%;
			border-radius: 15px 15px 0 0;
		}
	} */
	.conver{
		width: 100%;
		height: 100%;
		text-align: center;
		color: #fff;
		line-height: 125px;
		position: absolute;
		left: 0;
		top: 0;
		border-radius: 50%;
		z-index: 1;
		overflow: hidden;
	}
	.conver::before,
	.conver::after{
		content: '';
		position: absolute;
		left: -50%;
		width: 200px;
		height: 200px;
	}
	.conver::before{
		/* background-color: rgba(255,255,255,0.8); */
		background-color: #b37323;
		opacity: 0.8;
		border-radius: 40% 30%;
		animation: rotate1 10s linear infinite;
	}
	.conver::after{
		/* background-color: rgba(255,255,255,0.7); */
		background-color: #b37323;
		opacity: 0.7;
		border-radius: 42% 40%;
		animation: rotate2 10s linear infinite;
	}
	@keyframes rotate1{
		0%{
			transform: rotate(0deg);
			bottom: var(--progress);   /*控制进度*/
		}
		100%{
			transform: rotate(360deg);
			/* bottom: 20%; */
			bottom: var(--progress);
		}
	}
	@keyframes rotate2{
		0%{
			transform: rotate(45deg);
			bottom: var(--progress);
		}
		100%{
			transform: rotate(360deg);
			bottom: var(--progress);
		}
	}
</style>

页面中使用

• 组件引入并注册

<script>
import Battery from '@/components/Battery'

export default {
  name: 'App',
  components:{
    Battery
  }
}
</script>

• 组件的使用

<!-- :progress="60" 表示组件里面的prop中的progress赋值60，需要传多个参数即多用几个:key 例如:name="zs" :age="20" -->
<battery :progress="60"></battery>

页面效果（水波浮动）

• 截个图没有动态效果实际上是有的