d3.js - How to draw circles at different times with D3js? -


using d3js, need draw(append) circles, not less 1 second of distance. 1 circle in x position, 1 in y position after 0.5 second.

use settimeout. here working code snippet.

var nodes = [{          "name": "6",          "x": 207,          "y": 305      }, {          "name": "7",          "x": 404,          "y": 310      }, {          "name": "8",          "x": 420,          "y": 510      }, {          "name": "9",          "x": 540,          "y": 126      }, {          "name": "10",          "x": 350,          "y": 150      }, {          "name": "11",          "x": 177,          "y": 320      }, {          "name": "12",          "x": 200,          "y": 190      }, {          "name": "13",          "x": 170,          "y": 150      }, {          "name": "14",          "x": 107,          "y": 510      }, {          "name": "15",          "x": 104,          "y": 150      }, {          "name": "16",          "x": 104,          "y": 150      }, {          "name": "17",                "x": 310,          "y": 160      }, {          "name": "18",                "x": 120,          "y": 110      }, {          "name": "19",          "x": 619,          "y": 145      }, {          "name": "20",          "x": 148,          "y": 107      }, {          "name": "21",          "x": 575,          "y": 107      }];      var width = 500,      height = 400;    var color = d3.scale.category20();    var svg = d3.select("#map").append("svg")      .attr("width", width)      .attr("height", height);    nodes.foreach(function(d, i) {      settimeout(function() {          svg.append("circle")              .datum(d)              .attr("class", "node")              .attr("cx", function(d) {                  return d.x;              })              .attr("cy", function(d) {                  return d.y;              })                               .attr("r", "10")              .style("fill", function(d) {                  return color(i);              });                     }, 500 * i);  });
.node {    stroke: #fff;    stroke-width: 1.5px;  }    .overlay {    fill: none;    pointer-events: all;  }    #map{      border: 2px #555 dashed;      width:500px;      height:400px;  }
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.4.11/d3.min.js"></script>  <body>      <div id="map"></div>  </body>


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