Excel Services ECMAScript Overview
Using the ECMAScript Object Model
Access items in a workbook such as ranges, tables, PivotTables, charts, and sheets.
Set and retrieve values from cells by using ranges or named ranges.
Raise events when the user changes the active selection or active cell or when the user starts editing a cell.
Scroll to a different region and to switch the displayed sheet or named item.
For more information, see the following links:
ECMAScript .js File Location