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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; } </style> </head> <body> <script> // Feel free to change or delete any of the code you see in this editor! var svg = d3.select("body").append("svg") .attr("width", 960) .attr("height", 500) function render(data){ circles=d3.select("svg") .selectAll('circle') .data(data) circles .enter() .append("circle") .attr("cy",250) .attr("r",100) .attr("fill","green") .merge(circles) .attr("cx",function(d){return d;}) circles .exit() .remove() } render([200,500,700]) render([200,500]) </script> </body>
https://d3js.org/d3.v4.min.js