d3/examples/hello-world/hello-data-key.html

61 строка
1.3 KiB
HTML

<!DOCTYPE html>
<html>
<head>
<title>Hello, data!</title>
<script type="text/javascript" src="../../d3.js"></script>
</head>
<body>
Your lucky numbers are:<br>
<script type="text/javascript">
var i = 0, data = [
{id: i++, value: 4},
{id: i++, value: 8},
{id: i++, value: 15},
{id: i++, value: 16},
{id: i++, value: 23},
{id: i++, value: 42}
];
transform();
function transform() {
var t = d3.select("body")
.selectAll("span")
.data(data, function(d) { return d.id; });
t.enter().append("span")
.attr("id", function(d) { return "span-" + d.id; })
.append("svg")
.attr("width", 100)
.attr("height", 100)
.append("text")
.attr("x", "50%")
.attr("y", "50%")
.attr("dy", ".35em")
.attr("text-anchor", "middle")
.attr("fill", "white")
.attr("stroke", "black")
.attr("stroke-width", 1.5)
.style("font", "36pt Comic Sans MS")
.style("text-shadow", "3px 3px 3px rgba(0,0,0,.4)")
.text(function(d) { return d.value; });
t.select("text")
.text(function(d) { return d.value; });
t.exit().remove();
}
function refresh() {
data.shift();
data.push({id: i++ % 7, value: ~~(Math.random() * 100)});
transform();
}
window.addEventListener("keypress", refresh, false);
</script>
</body>
</html>