Recursion

<!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)
    
    svg.append("text")
      .text("Recursive Crusade")
    	.attr("id","title")
      .attr("y", 50)
      .attr("x", 20)
      .attr("font-size", 28)
    	.attr("font-weight", 500)
    	.attr("fill", "teal")
      .attr("font-family", "monospace")

svg.append("text")
      .text("")
    	.attr("id", "result")
      .attr("y", 90)
      .attr("x", 30)
      .attr("font-size", 20)
      .attr("font-family", "monospace")
    
    svg.append("text")
      .text("...")
    	.attr("id", "recursion")
      .attr("y", 120)
      .attr("x", 50)
      .attr("font-size", 20)
      .attr("font-family", "monospace")
    
    function removeDuplicateDates(arr, equals) {
      var originalArr = arr.slice(0);
      var i, len, j, val;
      arr.length = 0;

for (i = 0, len = originalArr.length; i < len; ++i) {
          val = originalArr[i];
          if (!arr.some(function(item) { return thingsEqual(item, val); })) {
              arr.push(val);
          }
      }
		}

function thingsEqual(thing1, thing2) {
        const date1 = new Date(thing1.created_on); 
        const date2 = new Date(thing2.created_on);

return date1.getDate() === date2.getDate()
            && date1.getMonth() === date1.getMonth()
            && date1.getFullYear() === date1.getFullYear();
    }

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