| Path : /var/www/html/mini-moneyexchange/public/assets/libs/flot/examples/ajax/ |
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| Current File : /var/www/html/mini-moneyexchange/public/assets/libs/flot/examples/ajax/index.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>