mirror of
https://github.com/JonnyBro/JaBa.git
synced 2024-12-05 03:16:24 +05:00
174 lines
4.2 KiB
HTML
174 lines
4.2 KiB
HTML
|
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
|
||
|
|
<html>
|
||
|
|
<head>
|
||
|
|
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
|
||
|
|
<title>Flot Examples: AJAX</title>
|
||
|
|
<link href="../examples.css" rel="stylesheet" type="text/css">
|
||
|
|
<!--[if lte IE 8]><script language="javascript" type="text/javascript" src="../../excanvas.min.js"></script><![endif]-->
|
||
|
|
<script language="javascript" type="text/javascript" src="../../jquery.js"></script>
|
||
|
|
<script language="javascript" type="text/javascript" src="../../jquery.flot.js"></script>
|
||
|
|
<script type="text/javascript">
|
||
|
|
|
||
|
|
$(function() {
|
||
|
|
|
||
|
|
var options = {
|
||
|
|
lines: {
|
||
|
|
show: true
|
||
|
|
},
|
||
|
|
points: {
|
||
|
|
show: true
|
||
|
|
},
|
||
|
|
xaxis: {
|
||
|
|
tickDecimals: 0,
|
||
|
|
tickSize: 1
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
var data = [];
|
||
|
|
|
||
|
|
$.plot("#placeholder", data, options);
|
||
|
|
|
||
|
|
// Fetch one series, adding to what we already have
|
||
|
|
|
||
|
|
var alreadyFetched = {};
|
||
|
|
|
||
|
|
$("button.fetchSeries").click(function () {
|
||
|
|
|
||
|
|
var button = $(this);
|
||
|
|
|
||
|
|
// Find the URL in the link right next to us, then fetch the data
|
||
|
|
|
||
|
|
var dataurl = button.siblings("a").attr("href");
|
||
|
|
|
||
|
|
function onDataReceived(series) {
|
||
|
|
|
||
|
|
// Extract the first coordinate pair; jQuery has parsed it, so
|
||
|
|
// the data is now just an ordinary JavaScript object
|
||
|
|
|
||
|
|
var firstcoordinate = "(" + series.data[0][0] + ", " + series.data[0][1] + ")";
|
||
|
|
button.siblings("span").text("Fetched " + series.label + ", first point: " + firstcoordinate);
|
||
|
|
|
||
|
|
// Push the new data onto our existing data array
|
||
|
|
|
||
|
|
if (!alreadyFetched[series.label]) {
|
||
|
|
alreadyFetched[series.label] = true;
|
||
|
|
data.push(series);
|
||
|
|
}
|
||
|
|
|
||
|
|
$.plot("#placeholder", data, options);
|
||
|
|
}
|
||
|
|
|
||
|
|
$.ajax({
|
||
|
|
url: dataurl,
|
||
|
|
type: "GET",
|
||
|
|
dataType: "json",
|
||
|
|
success: onDataReceived
|
||
|
|
});
|
||
|
|
});
|
||
|
|
|
||
|
|
// Initiate a recurring data update
|
||
|
|
|
||
|
|
$("button.dataUpdate").click(function () {
|
||
|
|
|
||
|
|
data = [];
|
||
|
|
alreadyFetched = {};
|
||
|
|
|
||
|
|
$.plot("#placeholder", data, options);
|
||
|
|
|
||
|
|
var iteration = 0;
|
||
|
|
|
||
|
|
function fetchData() {
|
||
|
|
|
||
|
|
++iteration;
|
||
|
|
|
||
|
|
function onDataReceived(series) {
|
||
|
|
|
||
|
|
// Load all the data in one pass; if we only got partial
|
||
|
|
// data we could merge it with what we already have.
|
||
|
|
|
||
|
|
data = [ series ];
|
||
|
|
$.plot("#placeholder", data, options);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Normally we call the same URL - a script connected to a
|
||
|
|
// database - but in this case we only have static example
|
||
|
|
// files, so we need to modify the URL.
|
||
|
|
|
||
|
|
$.ajax({
|
||
|
|
url: "data-eu-gdp-growth-" + iteration + ".json",
|
||
|
|
type: "GET",
|
||
|
|
dataType: "json",
|
||
|
|
success: onDataReceived
|
||
|
|
});
|
||
|
|
|
||
|
|
if (iteration < 5) {
|
||
|
|
setTimeout(fetchData, 1000);
|
||
|
|
} else {
|
||
|
|
data = [];
|
||
|
|
alreadyFetched = {};
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
setTimeout(fetchData, 1000);
|
||
|
|
});
|
||
|
|
|
||
|
|
// Load the first series by default, so we don't have an empty plot
|
||
|
|
|
||
|
|
$("button.fetchSeries:first").click();
|
||
|
|
|
||
|
|
// Add the Flot version string to the footer
|
||
|
|
|
||
|
|
$("#footer").prepend("Flot " + $.plot.version + " – ");
|
||
|
|
});
|
||
|
|
|
||
|
|
</script>
|
||
|
|
</head>
|
||
|
|
<body>
|
||
|
|
|
||
|
|
<div id="header">
|
||
|
|
<h2>AJAX</h2>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<div id="content">
|
||
|
|
|
||
|
|
<div class="demo-container">
|
||
|
|
<div id="placeholder" class="demo-placeholder"></div>
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<p>Example of loading data dynamically with AJAX. Percentage change in GDP (source: <a href="http://epp.eurostat.ec.europa.eu/tgm/table.do?tab=table&init=1&plugin=1&language=en&pcode=tsieb020">Eurostat</a>). Click the buttons below:</p>
|
||
|
|
|
||
|
|
<p>The data is fetched over HTTP, in this case directly from text files. Usually the URL would point to some web server handler (e.g. a PHP page or Java/.NET/Python/Ruby on Rails handler) that extracts it from a database and serializes it to JSON.</p>
|
||
|
|
|
||
|
|
<p>
|
||
|
|
<button class="fetchSeries">First dataset</button>
|
||
|
|
[ <a href="data-eu-gdp-growth.json">see data</a> ]
|
||
|
|
<span></span>
|
||
|
|
</p>
|
||
|
|
|
||
|
|
<p>
|
||
|
|
<button class="fetchSeries">Second dataset</button>
|
||
|
|
[ <a href="data-japan-gdp-growth.json">see data</a> ]
|
||
|
|
<span></span>
|
||
|
|
</p>
|
||
|
|
|
||
|
|
<p>
|
||
|
|
<button class="fetchSeries">Third dataset</button>
|
||
|
|
[ <a href="data-usa-gdp-growth.json">see data</a> ]
|
||
|
|
<span></span>
|
||
|
|
</p>
|
||
|
|
|
||
|
|
<p>If you combine AJAX with setTimeout, you can poll the server for new data.</p>
|
||
|
|
|
||
|
|
<p>
|
||
|
|
<button class="dataUpdate">Poll for data</button>
|
||
|
|
</p>
|
||
|
|
|
||
|
|
</div>
|
||
|
|
|
||
|
|
<div id="footer">
|
||
|
|
Copyright © 2007 - 2014 IOLA and Ole Laursen
|
||
|
|
</div>
|
||
|
|
|
||
|
|
</body>
|
||
|
|
</html>
|