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Fork of Blank Slate

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HHalah
Last edited Mar 5, 2024
Created on Mar 5, 2024

This example demonstrates the minimal "Hello World" pattern for the VizHub V3 Runtime Environment, showing a single line of text centered on screen. The code exports a `main` function that receives a `container` DIV element and writes HTML directly into it using `container.innerHTML`, with a fixed font size of 222 pixels. The rendering approach is plain DOM manipulation without any external libraries, highlighting the runtime's core API where the container's measurable dimensions and the `state`/`setState` options are available for future interactive extensions.

AI-generated description

A blank slate starting point showing the "Hello World" for the VizHub V3 Runtime Environment, which supports continuous hot reloading with interactive widgets.

  • There is no index.html - that's what triggers the V3 Runtime
  • The entry point is the main function exported from index.js
  • The main function takes an argument container, a DIV that has measurable dimensions using clientWidth and clientHeight
  • The second argument to main is an options object containing state and setState.
  • The state of the application is stored in state, which is initialized as an empty object {}.
  • The setState function can be called with a function that uses the previous state to create a new state object using immutable update patterns.
  • For an interactive example, see Mouse Follower.

Full course playlist: YouTube: Constructing Visualization 2024.

MIT Licensed

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