learn basic theory for javascript

TODO

• data structure
• basic algorithms
• webpack usage
• webpack principle
• react (vdom,fiber,hooks)
• closure
• promise
• http
• deep/shallow clone
• debounce/throttle
• event loop
• virtual list/DocumnetFragment
• time slice
• virtual dom
• design pattern
• mock data
• vue
• vite
• angular
• ssr(react,vue)