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| author | Igor Sfiligoi <isfiligoi@ucsd.edu> | 2013-11-07 12:50:35 -0500 |
|---|---|---|
| committer | Igor Sfiligoi <isfiligoi@ucsd.edu> | 2013-11-07 12:50:35 -0500 |
| commit | 680241cbb652ee29088baa6cde2da02002e5ec47 (patch) | |
| tree | 3f0c17df67c0ab0e91542ae75fff175750581859 /examples/ajax.html | |
| parent | f361d0498d284c6c7f3f366bf88e49b93e1245f0 (diff) | |
Diffstat (limited to 'examples/ajax.html')
| -rw-r--r-- | examples/ajax.html | 143 |
1 files changed, 0 insertions, 143 deletions
diff --git a/examples/ajax.html b/examples/ajax.html deleted file mode 100644 index 9b5ec85..0000000 --- a/examples/ajax.html +++ /dev/null @@ -1,143 +0,0 @@ -<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> -<html> - <head> - <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> - <title>Flot Examples</title> - <link href="layout.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> - </head> - <body> - <h1>Flot Examples</h1> - - <div id="placeholder" style="width:600px;height:300px;"></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> - <input class="fetchSeries" type="button" value="First dataset"> - - <a href="data-eu-gdp-growth.json">data</a> - - <span></span> - </p> - - <p> - <input class="fetchSeries" type="button" value="Second dataset"> - - <a href="data-japan-gdp-growth.json">data</a> - - <span></span> - </p> - - <p> - <input class="fetchSeries" type="button" value="Third dataset"> - - <a href="data-usa-gdp-growth.json">data</a> - - <span></span> - </p> - - <p>If you combine AJAX with setTimeout, you can poll the server - for new data.</p> - - <p> - <input class="dataUpdate" type="button" value="Poll for data"> - </p> - -<script type="text/javascript"> -$(function () { - var options = { - lines: { show: true }, - points: { show: true }, - xaxis: { tickDecimals: 0, tickSize: 1 } - }; - var data = []; - var placeholder = $("#placeholder"); - - $.plot(placeholder, data, options); - - - // fetch one series, adding to what we got - var alreadyFetched = {}; - - $("input.fetchSeries").click(function () { - var button = $(this); - - // find the URL in the link right next to us - var dataurl = button.siblings('a').attr('href'); - - // then fetch the data with jQuery - function onDataReceived(series) { - // extract the first coordinate pair so you can see that - // data is now an ordinary Javascript object - var firstcoordinate = '(' + series.data[0][0] + ', ' + series.data[0][1] + ')'; - - button.siblings('span').text('Fetched ' + series.label + ', first point: ' + firstcoordinate); - - // let's add it to our current data - if (!alreadyFetched[series.label]) { - alreadyFetched[series.label] = true; - data.push(series); - } - - // and plot all we got - $.plot(placeholder, data, options); - } - - $.ajax({ - url: dataurl, - method: 'GET', - dataType: 'json', - success: onDataReceived - }); - }); - - - // initiate a recurring data update - $("input.dataUpdate").click(function () { - // reset data - data = []; - alreadyFetched = {}; - - $.plot(placeholder, data, options); - - var iteration = 0; - - function fetchData() { - ++iteration; - - function onDataReceived(series) { - // we get all the data in one go, if we only got partial - // data, we could merge it with what we already got - data = [ series ]; - - $.plot($("#placeholder"), data, options); - } - - $.ajax({ - // usually, we'll just 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 - url: "data-eu-gdp-growth-" + iteration + ".json", - method: 'GET', - dataType: 'json', - success: onDataReceived - }); - - if (iteration < 5) - setTimeout(fetchData, 1000); - else { - data = []; - alreadyFetched = {}; - } - } - - setTimeout(fetchData, 1000); - }); -}); -</script> - - </body> -</html> |