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Blank Slate

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Rrichard.adamson@hotmail.com
Last edited Feb 18, 2024
Created on Feb 18, 2024

This example demonstrates the minimal setup required for a VizHub V3 visualization, rendering “Hello World!” in large text centered within a container. It uses the exported `main` function, which receives a `container` DIV and an options object, to set the container’s inner HTML with inline styles. The code does not rely on external libraries or APIs; instead, it shows the basic structure for continuous hot reloading, where state is initially empty and can be updated via `setState`. The rendering approach is direct DOM manipulation via `container.innerHTML`.

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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