D3: Drawing divs with data

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D3: Drawing divs with data

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Last edited Sep 26, 2022

Created on Sep 26, 2022

This example shows 25 randomly generated data values rendered as a series of inline-block bars. The code uses D3.js v7’s `d3.select` and the data join pattern with `.data()`, `.enter()`, and `.append()` to create `div` elements styled with a CSS class. Each bar’s height is computed dynamically by multiplying the integer data value (0–29) by 5 pixels, overriding the default 75-pixel CSS height. The data is generated client-side with a JavaScript loop and `Math.random()`.

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A bare minimum HTML page demonstrating use of CSS and JavaScript.

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