How to return value from a cell on an Excel spreadsheet in JavaScript

Question

I've been trying to figure out a way to access an Excel Spreadsheet in JavaScript and return the values stored within the cells based on the row/column they're located in. So far, I've tried this function:

function ReadData(cell, row) {
    var excel = new ActiveXObject("Excel.Application");
    var excel_file = excel.Workbooks.Open("Sudoku Puzzle.xls");
    var excel_sheet = excel.Worksheets("Sheet1");
    var data = excel_sheet.Cells(cell, row).Value;
    return data
}

But I get an Uncaught TypeError that states that ActiveXObject is not Defined. I know that the ActiveXObject isn't compatible in modern browsers, which was why I was wondering if there was an overall different method I could use.

Thanks.