extjs-gpl/build/examples/kitchensink/classic/samples/store/grid/MonthlySales.js

GPL licensed version of Sencha Ext JS

Ext.define('KitchenSink.store.grid.MonthlySales', {
    extend: 'Ext.data.ArrayStore',
    model: 'KitchenSink.model.grid.MonthlySales',
    alias: 'store.monthlysales',

    data: (function () {
        var data = [],
            thisYear = new Date().getYear() + 1900,
            mod = 0x7fffFFFF,
            // return integer [min,max)
            rand = function (min, max) {
                var r = (seed = ((seed * 214013) + 2531011) % mod) / mod; // [0, 1)
                return Math.floor(r * (max - min)) + min;
            },
            seed = 13;

        for (var year = 1900; year <= thisYear; ++year) {
            data.push([
                year, // id
                year,
                rand(-10, 100),
                rand(-10, 100),
                rand(-10, 200),
                rand(-10, 200),
                rand(-10, 200),
                rand(-10, 300),
                rand(-10, 300),
                rand(-10, 300),
                rand(-10, 600),
                rand(-10, 500),
                rand(-10, 200),
                rand(-10, 100)
            ]);
        }

        return data;
    }())
});