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Enter and Update
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<!DOCTYPE html> <head> <meta charset="utf-8"> <script src="https://d3js.org/d3.v4.min.js"></script> <style> body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; } svg { width: 100%; height: 100%; } </style> </head> <body> <svg></svg> <script> var rectWidth = 100; var height = 300; var data = [ 100, 250, 175, 200, 120 ]; var colors = d3.scaleOrdinal(d3.schemeCategory10); var svg = d3.select('svg'); // Update var bars = svg.selectAll('rect') .data(data, d => d); // exit bars.exit().remove(); // enter var enter = bars.enter().append('rect') .attr('width', rectWidth) .attr('stroke', '#fff'); // enter + update bars = enter.merge(bars) .attr('x', (d, i) => i * rectWidth) .attr('y', d => height - d) .attr('height', d => d) .attr('fill', d => colors(d)); </script> </body>
https://d3js.org/d3.v4.min.js