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Ssirusxcoder
Last edited Mar 10, 2024
Created on Mar 10, 2024

This example demonstrates the minimal "Hello World" template for the VizHub V3 runtime environment, displaying the text at a fixed font size of 242 pixels. It shows how the exported `main` function receives a container element and uses its dimensions to render content, while the empty state object and `setState` function enable future interactive updates. The code uses plain HTML and inline styles via template literals, with no external libraries. The example highlights the hot-reloading workflow where changes to the `fontSize` variable are reflected live in the browser.

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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