Simple module to programmatically create paypal buynow buttons. ! Warning ! Very ghetto version.

paypalButton.js

var paypalButton = (function() {
    /** Module by Sean Wilson (http://imsean.me) */
    var methods = {};

    methods.create = function(element, config, btnHtml) {
      var
          button = config.button,
          type = config.type,
          name = config.name,
          price = config.price,
          merchant = config.merchant,
          input = $('<input type="hidden">'),
          btn = $('<button type="submit"></button>');

        /** Set default form attributes */
        element
            .attr('method', 'post')
            .attr('action', 'https://www.paypal.com/cgi-bin/webscr')
            .attr('target', '_top');

        var default_config = {
            'cmd': '_xclick',
            'bn': 'JavascriptButton_buynow',
            'env': 'www',
            'business': element.attr('data-merchant')
        };
        config = $.extend({}, config, default_config);

        /** Set dynamic form input attributes */
        $.each(config, function(k, v) {
            if(k == 'name') k = 'item_name';
            if(k == 'price') k = 'amount';
            element.append(input.clone().attr({
                'name': k,
                'value': v
            }));
        });
        element.removeAttr('data-merchant');

        /** Build and append button to form */
        btn.addClass('btn btn-primary btn-block').html(btnHtml);
        element.append(btn);
    };

    return methods;
}());