source: Dev/trunk/d3/examples/hello-world/hello-data-key.html @ 76

Last change on this file since 76 was 76, checked in by fpvanagthoven, 14 years ago

d3

File size: 1.3 KB
Line 
1<!DOCTYPE html>
2<html>
3  <head>
4    <title>Hello, data!</title>
5    <script type="text/javascript" src="../../d3.js"></script>
6  </head>
7  <body>
8    Your lucky numbers are:<br>
9    <script type="text/javascript">
10
11var i = 0, data = [
12  {id: i++, value: 4},
13  {id: i++, value: 8},
14  {id: i++, value: 15},
15  {id: i++, value: 16},
16  {id: i++, value: 23},
17  {id: i++, value: 42}
18];
19
20transform();
21
22function transform() {
23  var t = d3.select("body")
24    .selectAll("span")
25      .data(data, function(d) { return d.id; });
26
27  t.enter().append("span")
28      .attr("id", function(d) { return "span-" + d.id; })
29    .append("svg:svg")
30      .attr("width", 100)
31      .attr("height", 100)
32    .append("svg:text")
33      .attr("x", "50%")
34      .attr("y", "50%")
35      .attr("dy", ".35em")
36      .attr("text-anchor", "middle")
37      .attr("fill", "white")
38      .attr("stroke", "black")
39      .attr("stroke-width", 1.5)
40      .style("font", "36pt Comic Sans MS")
41      .style("text-shadow", "3px 3px 3px rgba(0,0,0,.4)")
42      .text(function(d) { return d.value; });
43
44  t.select("text")
45      .text(function(d) { return d.value; });
46
47  t.exit().remove();
48}
49
50function refresh() {
51  data.shift();
52  data.push({id: i++ % 7, value: ~~(Math.random() * 100)});
53  transform();
54}
55
56window.addEventListener("keypress", refresh, false);
57
58    </script>
59  </body>
60</html>
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