H5 means html
uni-app is a framework that uses Vue.js to develop all front-end applications. Developers write a set of code that can be published to iOS, Android, Web (responsive), and various small programs (WeChat/Alipay/Baidu/Toutiao/ QQ/Dingding/Taobao), Kuaiapp and other platforms.
uni-app is a framework, the same as the ssm framework we learn from java.