Learn D3.js
This bar chart displays nine rectangular bars representing a dataset of numeric values, with varying heights corresponding to the data. It uses D3.js v4 to render the visualization as SVG elements within an HTML page. The chart generates bars by selecting all `rect` elements, binding the dataset, and appending new rectangles with the `.enter()` method. Each bar’s height and vertical position are calculated from the dataset values, while horizontal placement uses a `translate` transform. The bars are styled with a background color defined in CSS.