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wtf is testdemo?

qstar/testdemo — explained in plain English

Analysis updated 2026-07-18 · repo last pushed 2016-10-19

JavaScriptAudience · vibe coderComplexity · 1/5DormantSetup · easy

TL;DR

A personal collection of standalone HTML and JavaScript examples covering common front-end coding techniques, from closures to drag-and-drop to Canvas.

Mindmap

mindmap
  root((testdemo))
    Inputs
      HTML files
      JavaScript snippets
      Interview questions
    Outputs
      Working browser examples
      Commented code samples
    Use Cases
      Learn JavaScript closures
      Study drag and drop
      Reference regex and arrays
    Tech Stack
      JavaScript
      HTML
      CSS
      Canvas

Code map

Detail Auto

An interactive map of this repo's files and how they connect — its source is parsed live in your browser. Click Visualize to build it.

filefunction / class

Why would anyone build with this?

REASON 1

Open a single HTML file in the browser to see a working example of a specific JS technique, like closures or drag-and-drop.

REASON 2

Study the scope and prototype examples to understand tricky JavaScript concepts.

REASON 3

Use the collected interview-question files to practice common front-end interview problems.

REASON 4

Reference the CSS layout examples when building common page structures.

What's in the stack?

JavaScriptHTMLCSSCanvas

How it stacks up

qstar/testdemo3rd-eden/ircb.ioa15n/a15n
LanguageJavaScriptJavaScriptJavaScript
Last pushed2016-10-192016-11-162019-04-07
MaintenanceDormantDormantDormant
Setup difficultyeasyeasyeasy
Complexity1/52/52/5
Audiencevibe coderdevelopergeneral

Figures from each repo's GitHub metadata at analysis time.

How do you spin it up?

Difficulty · easy Time to first run · 5min

Just open the relevant HTML file directly in a browser, no build step or server needed.

License is not stated in the available content.

Yoink these prompts

Prompt 1
Explain how the closures example in this repo works and why the counter keeps its value.
Prompt 2
Walk me through the drag-and-drop example and how it tracks mouse movement.
Prompt 3
Show me the regular expression examples here and explain what each pattern validates.
Prompt 4
Help me understand the JavaScript prototype example step by step.

Frequently asked questions

wtf is testdemo?

A personal collection of standalone HTML and JavaScript examples covering common front-end coding techniques, from closures to drag-and-drop to Canvas.

What language is testdemo written in?

Mainly JavaScript. The stack also includes JavaScript, HTML, CSS.

Is testdemo actively maintained?

Dormant — no commits in 2+ years (last push 2016-10-19).

What license does testdemo use?

License is not stated in the available content.

How hard is testdemo to set up?

Setup difficulty is rated easy, with roughly 5min to a first successful run.

Who is testdemo for?

Mainly vibe coder.

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