Convert instance of 'google.visualization.DataTable' to CSV

DataTableToCSV.js

/**
 * Convert an instance of google.visualization.DataTable to CSV
 * @param {google.visualization.DataTable} dataTable_arg DataTable to convert
 * @return {String} Converted CSV String
 */
function dataTableToCSV(dataTable_arg) {
    var dt_cols = dataTable_arg.getNumberOfColumns();
    var dt_rows = dataTable_arg.getNumberOfRows();
    
    var csv_cols = [];
    var csv_out;
    
    // Iterate columns
    for (var i=0; i<dt_cols; i++) {
        // Replace any commas in column labels
        csv_cols.push(dataTable_arg.getColumnLabel(i).replace(/,/g,""));
    }
    
    // Create column row of CSV
    csv_out = csv_cols.join(",")+"\r\n";
    
    // Iterate rows
    for (i=0; i<dt_rows; i++) {
        var raw_col = [];
        for (var j=0; j<dt_cols; j++) {
            // Replace any commas in row values
            raw_col.push(dataTable_arg.getFormattedValue(i, j, 'label').replace(/,/g,""));
        }
        // Add row to CSV text
        csv_out += raw_col.join(",")+"\r\n";
    }

    return csv_out;
}

Thanks, that's perfect! Loads of posts on Google with unsuccessful attempts of getting this done;)

In case someone is looking for a quick way to have $browser download the result:

function downloadCSV (csv_out) {
            var blob = new Blob([csv_out], {type: 'text/csv;charset=utf-8'});
            var url  = window.URL || window.webkitURL;
            var link = document.createElementNS("http://www.w3.org/1999/xhtml", "a");
            link.href = url.createObjectURL(blob);
            link.download = "filenameOfChoice.csv"; 

            var event = document.createEvent("MouseEvents");
            event.initEvent("click", true, false);
            link.dispatchEvent(event); 
}

Great post!! Very usefull. Thanks

Thanks for a nice utility. Another way to download the result directly from the browser is by using data URI's: http://stackoverflow.com/a/7588465

👍

How to use above function..?
Thanks in advance.

I can't get downloaded. Please help me.

olmomp thanks .

Can i ask you something? .

if *.csv fiel open then xEF, xBB, xBF not in the *.csv file.

so i want the hexstring to add .

I opened the excel(windows) charset is unknow. ^^;

Can you tell me how do we integrate both sets of code on the drawToolbar where for CSV we have to give a URL?

Very nice, appreciate that~

it raise a bug when table has multi pages.
so i change "raw_col.push(dataTable_arg.getFormattedValue(i, j, 'label').replace(/,/g,""));"
like this
"raw_col.push(dataTable_arg.getFormattedValue(i, j).replace(/,/g,""));"
and it work
i remove "label",i think it no use.
https://developers.google.com/chart/interactive/docs/reference

Great Post.