This blog introduces the basis of defining APIs, Promises, Middlewares,

This blog introduces React Lifecycles, hooks, router, Rendering a list, Controling what to be rendered, and Handling Input.

This blog introduces basic usage of React, including how to use props and states.

This blog introduces basic syntax of JavaScript and event handling

This blog post introduces the syntax of bash scripting language

This blog introduces basic syntax of HTML and CSS, and some useful formatting techniques when formatting a web page.

This blog post introduces the shell, its basic commands, how it executes programs, and advanced functions