Input test (circle)

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Input test (circle)

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Last edited Aug 16, 2016

Created on Aug 16, 2016

This example demonstrates a circle whose radius is controlled by an HTML range slider, with the current value displayed as text. It shows how user input can directly update a visual element in real time. A blue, non-filled SVG circle is drawn on a 600x300 canvas, and the slider’s "input" event triggers a D3 v4 update function that modifies the circle’s `r` attribute. The code uses D3 selections, `.on` for event handling, and `.attr` to bind the slider value to the circle’s radius.

AI-generated description

This is a demonstration of the use of the html 'range' input using d3.js v4.

This graph is part of the code samples for the update to the book D3 Tips and Tricks to version 4 of d3.js.

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