2011-05-02 03:15:09 +04:00
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<!DOCTYPE html>
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2012-10-12 03:34:17 +04:00
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<meta charset="utf-8">
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<title>Hello, data!</title>
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<style>
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2010-09-28 22:34:52 +04:00
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2012-10-12 03:34:17 +04:00
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body,
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td {
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2010-09-28 22:34:52 +04:00
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font: 14px Helvetica Neue;
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text-rendering: optimizeLegibility;
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margin: 1em;
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}
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table {
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border-collapse: collapse;
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margin-top: .5em;
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}
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td {
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border: solid 1px #fff;
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text-align: center;
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width: 30px;
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height: 30px;
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}
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2012-10-12 03:34:17 +04:00
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</style>
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Your lucky numbers are:<br>
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<table id="table"></table>
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<script src="../../d3.js"></script>
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<script>
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2010-09-28 22:34:52 +04:00
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var data = [];
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for (var i = 0; i < 10; i++) {
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for (var j = 0, a = []; j < 10; j++) {
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a.push(~~(Math.random() * 100));
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}
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data.push(a);
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}
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2012-10-12 03:34:17 +04:00
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d3.select(window).on("keypress", refresh);
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2010-10-24 21:56:29 +04:00
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transform();
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2010-09-28 22:34:52 +04:00
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2010-10-24 21:56:29 +04:00
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function transform() {
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var t = d3.select("#table")
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.selectAll("tr")
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.data(data);
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2010-09-28 22:34:52 +04:00
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Simplify data join. Add insert & empty.
The data join is now specified as a single function of data, as with all other
properties. This allows the key to be computed on the previously-bound data,
rather than requiring the key to be serialized into the DOM (say, as an
attribute). In the case that there is no previously-bound data, it is still
possible to access the associated node as the `this` context.
The `enter` operator no longer performs an append. For symmetry with the `exit`
operator, you must call `append` after obtaining the entering selection. This
requires a tiny bit more code, but should make the code more clear. Also, it
provides an opportunity to use a different instantiation operator, such as the
new `insert` operator. This takes a second argument, which is a selector for the
insert-before reference element. For example, the selector ":first-child" will
prepend nodes.
The `empty` operator allows you to query whether a selection is empty (i.e.,
contains zero matching nodes).
2011-01-31 22:00:35 +03:00
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t.enter().append("tr")
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2010-10-24 21:56:29 +04:00
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.selectAll("td")
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.data(function(d) { return d; })
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Simplify data join. Add insert & empty.
The data join is now specified as a single function of data, as with all other
properties. This allows the key to be computed on the previously-bound data,
rather than requiring the key to be serialized into the DOM (say, as an
attribute). In the case that there is no previously-bound data, it is still
possible to access the associated node as the `this` context.
The `enter` operator no longer performs an append. For symmetry with the `exit`
operator, you must call `append` after obtaining the entering selection. This
requires a tiny bit more code, but should make the code more clear. Also, it
provides an opportunity to use a different instantiation operator, such as the
new `insert` operator. This takes a second argument, which is a selector for the
insert-before reference element. For example, the selector ":first-child" will
prepend nodes.
The `empty` operator allows you to query whether a selection is empty (i.e.,
contains zero matching nodes).
2011-01-31 22:00:35 +03:00
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.enter().append("td")
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2010-10-24 21:56:29 +04:00
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.style("background-color", function(d) { return "hsl(" + d + ",100%,50%)"; })
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.text(function(d) { return d; });
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2010-09-28 22:34:52 +04:00
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2010-10-24 21:56:29 +04:00
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t.selectAll("td")
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.data(function(d) { return d; })
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.style("background-color", function(d) { return "hsl(" + d + ",100%,50%)"; })
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.text(function(d) { return d; });
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}
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2010-09-28 22:34:52 +04:00
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function refresh() {
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for (var i = 0; i < 10; i++) {
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for (var j = 0; j < 10; j++) {
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data[i][j] = (data[i][j] + 1) % 360;
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}
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}
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2010-10-24 21:56:29 +04:00
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transform();
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2010-09-28 22:34:52 +04:00
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}
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2012-10-12 03:34:17 +04:00
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</script>
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