The scripts slows down the browser to a hault when a table has lots of rows

[MikeAlhayek]

The scripts slows down the browser to a hault when a table has lots of rows

[MikeAlhayek]

@clarketm I think the main culprit with the script is the getExportData() function. I change my code so it manually exports the data as you can see in the below code, but the call to getExportData() takes forever to finish executing which causes the browser to slow down.

$(function (e) {
    'use strict';

    var tables = $('.exportable');

    if (!tables.length) {
        return;
    }

    $('<button class="btn btn-primary manual-export-to-xls" title="Export To Excel">Export To Excel</button>').insertBefore(tables);

    $(document).on('click', '.manual-export-to-xls', function (el) {
        var tbl = $(this).parent().parent().find('.export-table').first();
        var table = new TableExport(tbl, {
            formats: ['xls'],
            exportButtons: false,
            bootstrap: true,
            trimWhitespace: true
        });

        var data = table.getExportData(); // This call takes forever to finish which kills the browser.

        var exportData = data['export-buttons-table']['xls'];

        table.export2file(exportData.data, exportData.mimeType, exportData.filename, exportData.fileExtension);
    });
});

[MikeAlhayek]

Pull request #195 fixes this problem once and for all. I tested the outcome on one report I have, the time to export the data went down from 12 seconds to 1! Yes, 10-11 seconds less without browser issue while not impacting the page load.