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Copyright (c) 2009, Yahoo! Inc.
All rights reserved.
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following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
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Sources of Intellectual Property Included in the YUI Library
YUI is issued by Yahoo! under the BSD license above. Below is a list of certain publicly available software that is the source of intellectual property in YUI, along with the licensing terms that pertain to thosesources of IP. This list is for informational purposes only and is not intended to represent an exhaustive list of third party contributions to the YUI.
* Douglas Crockford's JSON parsing and stringifying methods: In the JSON Utility, Douglas Crockford's JSON parsing and stringifying methods are adapted from work published at JSON.org. The adapted work is in the public domain.
* Robert Penner's animation-easing algorithms: In the Animation Utility, YUI makes use of Robert Penner's algorithms for easing.
* Geoff Stearns's SWFObject: In the Charts Control and the Uploader versions through 2.7.0, YUI makes use of Geoff Stearns's SWFObject v1.5 for Flash Player detection and embedding. More information on SWFObject can be found here (http://blog.deconcept.com/swfobject/). SWFObject is (c) 2007 Geoff Stearns and is released under the MIT License (http://www.opensource.org/licenses/mit-license.php).
* Diego Perini's IEContentLoaded technique: The Event Utility employs a technique developed by Diego Perini and licensed under GPL. YUI's use of this technique is included under our BSD license with the author's permission.
-->
<!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>Extracting data from an HTML table</title>
<style type="text/css">
/*margin and padding on body element
can introduce errors in determining
element position and are not recommended;
we turn them off as a foundation for YUI
CSS treatments. */
body {
margin:0;
padding:0;
}
</style>
<link rel="stylesheet" type="text/css" href="yui_2.7.0b-lib/fonts/fonts-min.css" />
<script type="text/javascript" src="yui_2.7.0b-lib/yahoo-dom-event/yahoo-dom-event.js"></script>
<script type="text/javascript" src="yui_2.7.0b-lib/datasource/datasource-min.js"></script>
<!--begin custom header content for this example-->
<style type="text/css" class="highlight-ignore">
#demo table {
border: 1px solid #aaa;
border-collapse: collapse;
font-size: 80%;
}
#demo caption {
margin-top: 1em;
padding: .5ex 0;
font-size: 130%;
color: #369;
}
#demo td {
border: 1px solid #aaa;
padding: .5ex 1ex;
}
#demo th {
background: #ccc;
border: 1px solid #aaa;
padding: .5ex 1ex;
}
</style>
<!--end custom header content for this example-->
</head>
<body class=" yui-skin-sam">
<h1>Extracting data from an HTML table</h1>
<div class="exampleIntro">
<p>DataSource supports using a table in markup as its source of truth.</p>
<p>This example illustrates how to create a "pass-thru" DataSource instance to leverage the DOM walking and parsing routines inside in order to extract the table's data into a JavaScript array structure.</p>
</div>
<!--BEGIN SOURCE CODE FOR EXAMPLE -->
<div id="demo">
<button type="button" id="demo_load">Extract the table data</code></button>
<button type="button" id="demo_go" disabled="disabled">Get Total Amount Due</button>
<p>Total Amount Due: <em id="report">(click the Extract button)</em></p>
<table id="accounts">
<caption>Table in markup with data in it</caption>
<thead>
<tr>
<th>Due Date</th>
<th>Account Number</th>
<th>Quantity</th>
<th>Amount Due</th>
</tr>
</thead>
<tbody>
<tr>
<td>1/23/1999</td>
<td>29e8548592d8c82</td>
<td>12</td>
<td>$150.00</td>
</tr>
<tr>
<td>5/19/1999</td>
<td>83849</td>
<td>8</td>
<td>$60.00</td>
</tr>
<tr>
<td>8/9/1999</td>
<td>11348</td>
<td>1</td>
<td>-$34.99</td>
</tr>
<tr>
<td>1/23/2000</td>
<td>29e8548592d8c82</td>
<td>10</td>
<td>-$1.00</td>
</tr>
<tr>
<td>4/28/2000</td>
<td>37892857482836437378273</td>
<td>123</td>
<td>$33.32</td>
</tr>
<tr>
<td>1/23/2001</td>
<td>83849</td>
<td>5</td>
<td>-$15.00</td>
</tr>
<tr>
<td>9/30/2001</td>
<td>224747</td>
<td>14</td>
<td>$56.78</td>
</tr>
</tbody>
</table>
</div>
<script type="text/javascript">
YAHOO.util.Event.onDOMReady(function () {
// Shortcuts
var DataSource = YAHOO.util.DataSource,
Event = YAHOO.util.Event,
Dom = YAHOO.util.Dom;
YAHOO.example.data = null; // this is where the data will go
// Add a new parser to DataSource to parse numbers that are prefixed with
// currency symbols (or any other non-numeric characters)
DataSource.Parser.currency = function (cur) {
if (YAHOO.lang.isString(cur)) {
var neg = !cur.indexOf('-');
cur = (neg?-1:1) * cur.slice(neg).replace(/^[^0-9.]+|,/g,'');
} else if (!YAHOO.lang.isNumber(cur)) {
return 0;
}
return cur;
};
Event.on('demo_load','click',function (e) {
// Here's the pass-thru DataSource. Instantiate and immediately call
// sendRequest, passing a simple assignment function as the callback's
// success handler
new DataSource(Dom.get('accounts'), {
responseType : DataSource.TYPE_HTMLTABLE,
responseSchema : {
// Describe the object keys each record will have and what type
// of data to parse into the respective values
fields : [
{ key: 'due', parser: 'date' },
{ key: 'account' },
{ key: 'quantity', parser: 'number' },
{ key: 'amount', parser: 'currency' } // use our new parser
]
}
}).sendRequest(null,{
success : function (req,res) {
YAHOO.example.data = res.results;
}
});
YAHOO.log(YAHOO.lang.dump(YAHOO.example.data), "info", "example");
// The work is done and data is populated. Update the UI to allow for
// referencing the data structure.
Dom.get('demo_load').disabled = true;
Dom.get('demo_go').disabled = false;
Dom.get('report').innerHTML = "Table data loaded. Click <em>Get Total Amount Due</em>.";
});
Event.on('demo_go','click', function (e) {
var data = YAHOO.example.data || [],
total = 0,
i;
// Proof that we have a populated data object
for (i = data.length - 1; i >= 0; --i) {
total += data[i].amount;
}
Dom.get('report').innerHTML = '$' + total.toFixed(2);
});
});
</script>
<!--END SOURCE CODE FOR EXAMPLE -->
</body>
</html>
<!-- presentbright.corp.yahoo.com uncompressed/chunked Thu Feb 19 10:53:11 PST 2009 -->
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yui_2.7.0b.zip( 4,431 k)