Chealwoo's CS study

Basic Web UI Skills; This web site is to keep Foundational Web UI knowledge. For example, links of official sites, specification, and tutorial sites/ basic test/ useful tools/ etc/

Web Client


JavaScript is a cross-platform, object-oriented scripting language. JavaScript is a small, lightweight language; it is not useful as a standalone language, but is designed for easy embedding in other products and applications, such as web browsers... (CoreJavaScript 1.5 Guide)


HTML or HyperText Markup Language is the standard markup language used to create Web pages. HTML is written in the form of HTML elements consisting of tags enclosed in angle brackets (like <html> )

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Cascading Style Sheets (CSS) is a simple mechanism for adding style (e.g., fonts, colors, spacing) to Web documents. (CSS Home page)


CSS Framework

Visit Bootstrap Home »


My mobile experience

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Hot Topics

regexp, chart.js, ARIA, webRTC, and coming more

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Server - Backend


PHP is a popular general-purpose scripting language that is especially suited to web development.
Fast, flexible and pragmatic, PHP powers everything from your blog to the most popular websites in the world.

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Server - Backend


Color Chart/ ASCII/ Text Code/ ..

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Dev Tools

Unit Testing, Version Control, ISPs, Project and Build Tool

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Dev Ops

Docker, Kubernetes,

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Libraries Used to build this web