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# YUI Library Examples: DataTable Control: Progressive Enhancement

# DataTable Control: Progressive Enhancement

This example creates a DataTable instance based on markup that already exists on the page. By progressively enhancing markup with higher order functionality, users who do not have JavaScript enabled are still able to view the page's content and experience core functionality.

In this example's code, note that we listen for the window "load" event before calling our function to be sure that the original table markup is fully rendered and available as a DataSource source for our DataTable instance.

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Due Date | Account Number | Quantity | Amount Due
--- | --- | --- | ---
1/23/1999 | 29e8548592d8c82 | 12 | $150.00
5/19/1999 | 83849 | 8 | $60.00
8/9/1999 | 11348 | 1 | $34.99
1/23/2000 | 29e8548592d8c82 | 10 | $1.00
4/28/2000 | 37892857482836437378273 | 123 | $33.32
1/23/2001 | 83849 | 5 | $15.00
9/30/2001 | 224747 | 14 | $56.78

## Sample Code for this Example

Data:

/* Data is derived from the HTML TABLE element. */

CSS:

/* No custom CSS. */

Markup:

<div id="markup"> <table id="accounts"> <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>

JavaScript:

YAHOO.util.Event.addListener(window, "load", function() { YAHOO.example.EnhanceFromMarkup = new function() { var myColumnDefs = [ {key:"due",label:"Due Date",formatter:YAHOO.widget.DataTable.formatDate,sortable:true}, {key:"account",label:"Account Number", sortable:true}, {key:"quantity",label:"Quantity",formatter:YAHOO.widget.DataTable.formatNumber,sortable:true}, {key:"amount",label:"Amount Due",formatter:YAHOO.widget.DataTable.formatCurrency,sortable:true} ]; this.parseNumberFromCurrency = function(sString) { // Remove dollar sign and make it a float return parseFloat(sString.substring(1)); }; this.myDataSource = new YAHOO.util.DataSource(YAHOO.util.Dom.get("accounts")); this.myDataSource.responseType = YAHOO.util.DataSource.TYPE_HTMLTABLE; this.myDataSource.responseSchema = { fields: [{key:"due", parser:"date"}, {key:"account"}, {key:"quantity", parser:"number"}, {key:"amount", parser:this.parseNumberFromCurrency} // point to a custom parser ] }; this.myDataTable = new YAHOO.widget.DataTable("markup", myColumnDefs, this.myDataSource, {caption:"Example: Progressively Enhanced Table from Markup", sortedBy:{key:"due",dir:"asc"}} ); }; });

## Configuration for This Example

You can load the necessary JavaScript and CSS for this example from Yahoo's servers. Click here to load the YUI Dependency Configurator with all of this example's dependencies preconfigured.

### YUI Logger Output:

Note: Logging and debugging is currently turned off for this example.

Reload with logging
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### DataTable Control Examples:

### More DataTable Control Resources:

- User's Guide (external)
- API Documentation
- Cheat Sheet PDF (external)

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