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Last edited Jan 30, 2020

Created on Jan 30, 2020

This example demonstrates data binding in D3 v5, where a simple list of numbers is rendered as SVG text labels. Clicking the SVG triggers an update that doubles each value, showcasing the enter, update, and exit pattern through `d3.select` and the `data()` join. The visualization uses `selectAll("text")` to bind the array to existing elements, appends new text nodes on enter, repositions them with an `attr("x")` callback, and removes extras via `exit().remove()`. The initial data `[1,2,3]` is hard-coded and rendered within an SVG of fixed dimensions.

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