Hi everyone

 

My client has asked me to come up with a shopping cart and I want to know how to build one up in Javascript, if anyone has any ideas let me know

 

cheers

the best way would be a combination of AJAX (for ease of use) and PHP (for security).

 

What you can do is set up the "add to cart" button as a link which goes to, for example :

java script:addToCart( 62 );

where "62" is the unique ID number for that product.

 

The addToCart function then does a POST request to this URL:

backend.php?ajax=true&action=addToCart&productID=62

this backend.php page will recognise this (and other functions), and for this one, add the product ID to a cookie.

 

The standard cookie layout is that of an array like so:

Array(
 [23] = 1,
 [58] = 2,
 [62] = 2
)

 

Where the key ( in []) is the ID of the product and the value is the quantity required.

 

The backend.php script could also return an XML (JSON etc) or plain HTML string which updates the on-screen cart details.

 

If this sounds too complicated to achieve yourself, I am available to hire for such products so get in touch via PM.