svg实现环形进度条需要用到的知识：
1、会使用path的d属性画一个圆环
//用svg的path元素的A命令画圆
<path
d="
M cx cy
m 0 -r
a r r 0 1 0 0 2r
a r r 0 1 0 0 -2r"
>
></path>
//cx cy起点 r 半径
2、熟悉stroke,stroke-linecap,stroke-width,stroke-dasharray、stroke-dashoffset
话不多说，直接上代码
<div style="width: 200px;height: 200px;">
<svg viewBox="0 0 100 100">
<path
d="M 50 50 m -40 0 a 40 40 0 1 0 80 0 a 40 40 0 1 0 -80 0"
fill="none"
stroke="#e5e9f2"
stroke-width="5">
></path>
<path
d="M 50 50 m -40 0 a 40 40 0 1 0 80 0 a 40 40 0 1 0 -80 0"
fill="none"
stroke="#20a0ff"
stroke-linecap="round"
class="my-svg-path"
transform="rotate(90,50,50)"
stroke-width="5">
</path>
</svg>
</div>.my-svg-path{
stroke-dasharray: 252.2px, 252.2px;
stroke-dashoffset: 22px;
transition: stroke-dashoffset 0.6s ease 0s, stroke 0.6s ease 0s;
transform: rotateZ(90deg);
transform-origin: 50% 50%;
}效果：
