Helper script to extract JSON BOM data from http://reprap.org/wiki/Prusa_Mendel_(iteration_2)

prusaBOM.js

var bom = {
    parts: importTable($('table')[3]),
    vitamins: importTable($('table')[5], 'Fasteners'),
    wades: {
        parts: importTable($('table')[4]),
        vitamins: importTable($('table')[6], 'Fasteners')
    }
};

function importTable(tbl, memberName) {

    // Select column headers into fields array
    var fields = $('thead th', tbl).map(function (t, m) { return $(m).text().trim(); }),
        rows = [],
        scope = {};

    // In cases where the table has no heading separators, we don't need to create a named
    // scope for the rows and can simply return the array
    if (memberName) {
        scope[memberName] = rows;
    } else {
        scope = rows;
    }

    $('tbody tr', tbl).each(function () {
        var th_text = $('th', this).eq(0).text().trim();

        if (th_text) {
            // The prusa Rods section has a small paragraph in it, clip that
            if (th_text.indexOf('Rods ') == 0) th_text = 'Rods';

            // Shouldn't enter this block if memberName is empty. Caller has the responsiblity
            // of making the distinction
            rows = [];
            scope[th_text] = rows;
            console.log('setting: ' + th_text);
        } else {
            var row = $('td', this).map(function () { return $(this).text().trim(); }).get(),
                o = {};

            for (var c in row) {
                o[fields[c]] = row[c];
            }
            rows.push(o);
        }
    });

    return scope;
}