支持的吧 , 比如 使用weui的 loading , 我这边手机和开发者工具都能动 。但是无法通过css让svg动起来 , 只能使用svg自身的动画

.weui-loading {
	display: inline-block;
	vertical-align: middle;
	font-size: 16px;
	width: 1em;
	height: 1em;
	mask: url('data:image/svg+xml;base64,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')
		0 0 no-repeat;
	mask-size: cover;
	background-color: currentColor;
	color: #606060;
}

我也想问，svg是某些应用场景完美的存在，css和canvas都不好用的