code to add to cart by javascript

1
2// Appends the required hidden values to PayPal's form before submitting
3
4populatePayPalForm: function() {
5    var self = this;
6    if( self.$paypalForm.length ) {
7        var $form = self.$paypalForm;
8        var cart = self._toJSONObject( self.storage.getItem( self.cartName ) );
9        var shipping = self.storage.getItem( self.shippingRates );
10        var numShipping = self._convertString( shipping );
11        var cartItems = cart.items;
12        var singShipping = Math.floor( numShipping / cartItems.length );
13
14        $form.attr( "action", self.paypalURL );
15        $form.find( "input[name='business']" ).val( self.paypalBusinessEmail );
16        $form.find( "input[name='currency_code']" ).val( self.paypalCurrency );
17
18        for( var i = 0; i < cartItems.length; ++i ) {
19            var cartItem = cartItems[i];
20            var n = i + 1;
21            var name = cartItem.product;
22            var price = cartItem.price;
23            var qty = cartItem.qty;
24
25            $( "<div/>" ).html( "<input type='hidden' name='quantity_" + n + "' value='" + qty + "'/>" ).
26            insertBefore( "#paypal-btn" );
27            $( "<div/>" ).html( "<input type='hidden' name='item_name_" + n + "' value='" + name + "'/>" ).
28            insertBefore( "#paypal-btn" );
29            $( "<div/>" ).html( "<input type='hidden' name='item_number_" + n + "' value='SKU " + name + "'/>" ).
30            insertBefore( "#paypal-btn" );
31            $( "<div/>" ).html( "<input type='hidden' name='amount_" + n + "' value='" + self._formatNumber( price, 2 ) + "'/>" ).
32            insertBefore( "#paypal-btn" );
33            $( "<div/>" ).html( "<input type='hidden' name='shipping_" + n + "' value='" + self._formatNumber( singShipping, 2 ) + "'/>" ).
34            insertBefore( "#paypal-btn" );
35
36        }
37
38    }
39}
40