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Testing size of array
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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) var h = 3; var a = [1,2,4]; if(! a.length || a.length > h) { a = new Array(h); } if(a.length < h) { a.push(1); } else { a[h-1] = 3; } svg.append("text") .text(a) .attr("y", 200) .attr("x", 120) .style("font-size", 36) .style("font-family", "monospace") </script> </body>
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