Shopify Clear Cart Cookie on logout

shopify-clearcart.js

/*
@require
Jquery: https://jquery.com/
*/

function delete_cookie(name) {
  document.cookie = name +'=; Path=/; Expires=Thu, 01 Jan 1970 00:00:01 GMT;';
}

// logout link
$('a[href^="/account/logout"]').on('click', function(event){
  event.preventDefault();
  var href = $(this).attr("href"),
      target = '';

  delete_cookie('cart');

  // wait for data to push and then open link
  setTimeout(function() { // now wait 150 milliseconds...
      window.open(href,(!target?"_self":target)); // ...and open the link as usual
  },150);

});

Hi Bmodena,

This is fantastic. Question, can you modify this to have a different trigger? For example, rather than having the user trigger the cart being cleared when logging out, can we use a time frame? Example logic statement: 15 days after the cart was created, the cart clears.

Thanks!

I think by default the Shopify cart expires in 14 days. As far as I know It is not possible to get the expiration date of a cookie through Javascript. So you would have to look into https://shopify.dev/api/ajax/reference/cart GET /cart.js endpoint and it looks like this has a few "created_at": "2019-04-10T20:49:00.148Z", values in the response. If those are tied to cart creation time you could use that.