D3: An HTML div tooltip

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D3: An HTML div tooltip

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Last edited Aug 3, 2016

Created on Aug 3, 2016

This example shows a bar chart of 20 numeric values that users can hover over to see a tooltip with the exact data point. The tooltip is an HTML div styled with CSS, and it appears near the cursor using `d3.select` to update its position and text content. The chart uses `d3.scaleBand` and `d3.scaleLinear` for layout, and each rectangle responds to `mouseover` and `mouseout` events to toggle the tooltip’s visibility. Clicking any bar triggers a sorting animation with `transition` and `delay`, reordering the bars by value in ascending or descending order.

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