Sets or retrieves the source of the data for data binding.
In this example, a text box is bound to the customer_name field of a data source object with an ID of “customer.” Because the text box is located in a data-bound table, it is repeated to display each of the records provided by the data source.
<table datasrc="#customer"> <tr><td><input type="textbox" datafld="customer_name"><td><tr> </table>
The dataFld property is not available on param objects; use getAttribute(‘dataFld’) instead. Tabular and single-valued data consumers use the dataSrc property to specify a binding. The property takes a string that corresponds to the unique identifier of a data source object (DSO) on the page. The string must be prefixed by a number sign (#). When the dataSrc property is applied to a tabular data consumer, the entire data set is repeated by the consuming elements. When the dataSrc property is applied to a table, any contained single-valued consumer objects that specify a dataFld property are repeated for each record in the supplied data set. To complete the binding, the binding agent interrogates the enclosing table for its data source. A tabular data consumer contained within another tabular data consumer (table) must specify an explicit dataSrc.
Introduction to Data Binding
Microsoft Developer Network: [Windows Internet Explorer API reference Article]