Fork of Bar chart with D3.js
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This bar chart displays the popularity of programming languages using Stack Overflow survey data from 2019, with percentages shown on both the y-axis and atop each bar. D3.js v5 (d3.csv, d3.scaleLinear, d3.scaleBand, d3.axisLeft, d3.axisBottom) renders the chart as SVG elements. On mouseenter, the chart dims all values and draws a dashed reference line at the hovered bar’s height while displaying each bar’s percentage difference relative to that bar; mouseleave restores the original view. A grid drawn via d3.axisLeft with tickSize helps compare values.
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