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nikolay ivanov
269
OfficeWeb/sdk/Common/Charts/docs/xml-data.html
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269
OfficeWeb/sdk/Common/Charts/docs/xml-data.html
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<!DOCTYPE html>
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<html>
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<head>
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<meta http-equiv="X-UA-Compatible" content="chrome=1">
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<!--
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/**
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* o------------------------------------------------------------------------------o
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* | This file is part of the OfficeExcel package - you can learn more at: |
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* | |
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* | http://www.OfficeExcel.net |
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* | |
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* | This package is licensed under the OfficeExcel license. For all kinds of business |
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* | purposes there is a small one-time licensing fee to pay and for non |
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* | commercial purposes it is free to use. You can read the full license here: |
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* | |
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* | http://www.OfficeExcel.net/LICENSE.txt |
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* o------------------------------------------------------------------------------o
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*/
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-->
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<title>An example of using XML data</title>
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<meta name="keywords" content="OfficeExcel html5 canvas chart docs xml example" />
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<meta name="description" content="An example of using XML data as a source of your chart data" />
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<meta name="googlebot" content="NOODP">
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<meta property="og:title" content="OfficeExcel: HTML5 Javascript charts library" />
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<meta property="og:description" content="A chart library based on the HTML5 canvas tag" />
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<meta property="og:image" content="http://www.OfficeExcel.net/images/logo.jpg"/>
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<link rel="stylesheet" href="../css/website.css" type="text/css" media="screen" />
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<link rel="icon" type="image/png" href="../images/favicon.png">
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<!-- Place this tag in your head or just before your close body tag -->
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<script type="text/javascript" src="https://apis.google.com/js/plusone.js"></script>
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<meta name="keywords" content="OfficeExcel chart html5 javascript canvas" />
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<meta name="description" content="OfficeExcel: HTML5 Javascript charts library - Getting data from an XML file" />
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<script src="../libraries/OfficeExcel.common.core.js" ></script>
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<script src="../libraries/OfficeExcel.common.key.js" ></script>
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<script src="../libraries/OfficeExcel.line.js" ></script>
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<!--[if lt IE 9]><script src="../excanvas/excanvas.original.js"></script><![endif]-->
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<?php PrintAnalyticsCode() ?>
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<script>
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/**
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* Makes an AJAX call. It calls the given callback (a function) when ready.
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* It's the same AjaxCall() function as that in the AJAX documentation.
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*
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* @param string url The URL to retrieve
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* @param function callback A function object that is called when the response is ready, there's an example below
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* called "myCallback".
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*/
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function AjaxCall (url, callback)
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{
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// Mozilla, Safari, ...
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if (window.XMLHttpRequest) {
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var httpRequest = new XMLHttpRequest();
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// MSIE
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} else if (window.ActiveXObject) {
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var httpRequest = new ActiveXObject("Microsoft.XMLHTTP");
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}
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httpRequest.onreadystatechange = callback;
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httpRequest.open('GET', url, true);
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httpRequest.send();
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}
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/**
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* This sample callback function is called when the data is ready (readyState=4). It is where
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* the XML response is parsed, the data pulled out and finally the chart is created.
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*/
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function myXMLProcessor ()
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{
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// Check the XMLHttpRequest object readystate
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if (this.readyState == 4 && this.status == 200) {
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/**
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* Create an xmlDoc parse. MSIE has a slightly different syntax to other browsers
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*/
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if (window.DOMParser) {
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var parser = new DOMParser();
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var xmlDoc = parser.parseFromString(this.responseText,"text/xml");
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} else {
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var xmlDoc = new ActiveXObject("Microsoft.XMLDOM");
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xmlDoc.async = "false";
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xmlDoc.loadXML(this.responseText);
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}
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/**
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* Initialise the arrays that we will populate with data
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*/
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var john = [];
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var fred = [];
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var lucy = [];
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var days = xmlDoc.getElementsByTagName("stats");
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for (var i=0; i<days[0].childNodes.length; ++i) {
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var node = days[0].childNodes[i]
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if (node.nodeName == 'day') {
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var john_tag = node.getElementsByTagName('john');
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var fred_tag = node.getElementsByTagName('fred');
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var lucy_tag = node.getElementsByTagName('lucy');
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john.push(Number(john_tag[0].childNodes[0].nodeValue));
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fred.push(Number(fred_tag[0].childNodes[0].nodeValue));
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lucy.push(Number(lucy_tag[0].childNodes[0].nodeValue));
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}
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}
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/**
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* Now we have the information, create and show the chart
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*/
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var myLine = new OfficeExcel.Line('cvs', john, fred, lucy);
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myLine.Set('chart.title', 'A chart of Johns, Freds and Lucys weekly statistics');
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myLine.Set('chart.linewidth', 2);
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myLine.Set('chart.hmargin', 5);
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myLine.Set('chart.tickmarks', 'endcircle');
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myLine.Set('chart.labels', ['Monday','Tuesday','Wednesday','Thursday','Friday','Saturday','Sunday']);
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myLine.Set('chart.key', ['John', 'Fred', 'Lucy']);
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myLine.Draw();
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}
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}
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/**
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* The window.onload function initiates fetching the data from the server. It makes use of the
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* AjaxCall() which is detailed in the documentation here: http://www.OfficeExcel.net/docs/index.html#ajax
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*/
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window.onload = function ()
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{
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var url = 'http://' + location.host + '/sample.xml';
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AjaxCall(url, myXMLProcessor);
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}
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</script>
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</head>
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<body>
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<!-- Social networking buttons -->
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<?php
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$prefix = substr($_SERVER['SERVER_NAME'], 0, 3);
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require("/OfficeExcel.{$prefix}/social.html");
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?>
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<!-- Social networking buttons -->
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<div id="breadcrumb">
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<a href="../index.html">OfficeExcel: HTML5 Javascript charts library</a>
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>
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<a href="./index.html">Documentation</a>
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>
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Getting data from an XML file
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</div>
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<script>
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if (OfficeExcel.isOld()) {
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document.write('<div style="background-color: #fee; border: 2px dashed red; padding: 5px"><b>Important</b><br /><br /> Internet Explorer does not natively support the HTML5 canvas tag, so if you want to see the charts, you can either:<ul><li>Install <a href="http://code.google.com/chrome/chromeframe/">Google Chrome Frame</a></li><li>Use ExCanvas. This is provided in the OfficeExcel Archive.</li><li>Use another browser entirely. Your choices are Firefox 3.5+, Chrome 2+, Safari 4+ or Opera 10.5+. </li></ul> <b>Note:</b> Internet Explorer 9 fully supports the canvas tag.</div>');
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}
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</script>
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<h1>Fetching <span>data from an XML file (AJAX)</span></h1>
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<div class="warning">
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<b>Warning:</b>
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Because of the XMLHttpRequest security restrictions this example does not work offline. You can view the online version
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<a href="http://www.OfficeExcel.net/docs/xml-data.html" target="_blank">here</a>.
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</div>
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<canvas id="cvs" width="600" height="250" style="float: right">[No canvas support]</canvas>
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<p>
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This is an example of fetching data from an XML file that is located on the server. The page uses the XMLHttpRequest (Javascript)
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object to fetch the XML file (<a href="http://www.OfficeExcel.net/sample.xml">sample.xml</a>) then parses it in Javascript and creates the chart. The function that parses the XML response
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and then uses the data to create the chart is shown below and called <i>myXMLProcessor()</i> (it's the XMLHttpRequest callback function).
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</p>
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<p>
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This example has been tested in modern browsers and also MSIE 7/8 (via MSIE9 compatibility modes).
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</p>
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<br clear="all" />
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<pre class="code">
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<script>
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// This is the same AJAX function that is defined in the documentation here:
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// <a href="http://www.OfficeExcel.net/docs/#ajax">http://www.OfficeExcel.net/docs/#ajax</a>
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AjaxCall('/sample.xml', myXMLProcessor);
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/**
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* This sample callback function is called when the data is ready (readyState=4). It is where
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* the XML response is parsed, the data pulled out and finally the chart is created.
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*/
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function myXMLProcessor ()
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{
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// Check the readystate to see if the XMLHttpRequest object is ready
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if (this.readyState == 4 && this.status == 200) {
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/**
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* This gets an xmlDoc object, accounting for differences in MSIE and
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* other browsers
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*/
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if (window.DOMParser) {
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var parser = new DOMParser();
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var xmlDoc = parser.parseFromString(this.responseText,"text/xml");
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} else {
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var xmlDoc = new ActiveXObject("Microsoft.XMLDOM");
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xmlDoc.async = "false";
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xmlDoc.loadXML(this.responseText);
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}
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/**
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* Initialise the arrays that we will populate with data
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*/
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var john = [];
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var fred = [];
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var lucy = [];
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/**
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* Now the main loop that goes through the XML extracting the data
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*/
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var days = xmlDoc.getElementsByTagName("stats");
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for (var i=0; i<days[0].childNodes.length; ++i) {
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var node = days[0].childNodes[i]
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if (node.nodeName == 'day') {
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var john_tag = node.getElementsByTagName('john');
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var fred_tag = node.getElementsByTagName('fred');
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var lucy_tag = node.getElementsByTagName('lucy');
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john.push(Number(john_tag[0].childNodes[0].nodeValue));
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fred.push(Number(fred_tag[0].childNodes[0].nodeValue));
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lucy.push(Number(lucy_tag[0].childNodes[0].nodeValue));
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}
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}
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/**
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* Now we have the information, use it to create and show the chart
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*/
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var myLine = new OfficeExcel.Line('cvs', john, fred, lucy);
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myLine.Set('chart.title', 'A chart of Johns, Freds and Lucys weekly statistics');
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myLine.Set('chart.linewidth', 2);
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myLine.Set('chart.hmargin', 5);
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myLine.Set('chart.tickmarks', 'endcircle');
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myLine.Set('chart.labels', ['Monday','Tuesday','Wednesday','Thursday','Friday','Saturday','Sunday']);
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myLine.Set('chart.key', ['John', 'Fred', 'Lucy']);
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myLine.Draw();
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}
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}
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</script>
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</pre>
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</body>
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</html>
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