版本:4.0.0-alpha.2
- https://cdn.bootcdn.net/ajax/libs/vant/4.0.0-alpha.2/index.css
- https://cdn.bootcdn.net/ajax/libs/vant/4.0.0-alpha.2/index.min.css
- https://cdn.bootcdn.net/ajax/libs/vant/4.0.0-alpha.2/vant.js
- https://cdn.bootcdn.net/ajax/libs/vant/4.0.0-alpha.2/vant.min.js