bootstrap是基于jquery的ui框架。https://blog.csdn.net/detergent/article/details/79061557
需要搭配使用。https://blog.csdn.net/weixin_41756573/article/details/104505092
教程:https://www.runoob.com/bootstrap/bootstrap-tutorial.html
bootstrap是ui框架,跟angular等js框架不是一个概念。那jquery和angular呢?https://www.cnblogs.com/lgx5/p/10857516.html
下载:https://getbootstrap.com/docs/3.4/getting-started/#download