Customising the Add to Cart Button Component

Customise the "Add to Cart" button to keep customers on the Page or redirect them straight to the Checkout Flow with a "Buy Now" button.


This Article assumes you've already:

  • Added a "cart_add" button to a Layout. 

If you've not already done this, you can read the following Articles to learn more:


Although we've had an "Add to Cart" button for a while now, we've recently added the ability to add a custom Layout for this component.

This will allow you to:

  • Change the style of the button
  • Change the style of the button when the Product is out of stock
  • Change the behaviour of JavaScript when adding to the Cart is successful

Specifying a Layout

You can add a Layout to the Cart Add Button by adding a component_layout parameter to the Liquid: {% include 'ecommerce/cart_add', component_layout: 'my_custom_layout' -%}

This feature is backwards compatible, so if you have a Site which does not specify a Layout for these buttons, the default Layout will be chosen automatically- and this will be identical to the style and behaviour you are used to.

Layout Files

We store these Layout files at the following path: layouts/modules/module_14/components/add_to_cart_button/my_custom_layout.liquid

You can either edit the default Layout or create your own by right-clicking on the "my_custom_layout" folder.


Looking at the default layout, you can see that it has some key characteristics you may wish to keep in your new Layout:

  • Checking if the Product is in stock
  • Running the JavaScript function

Checking if the Product is In Stock (or no inventory limit is set)

You can use a Liquid If Statement to check if the Product is in stock.


Running the JavaScript Function

To achieve the functionality of adding a Product to the Cart, you'll need to run a JavaScript function when the button is clicked.  The first argument is mandatory- you must pass in the ID of the Product using Liquid: onclick="s_e_cart_add({{this.id}})"

Customising the Success Alert

Adding your own Function

The second argument in the JavaScript function is optional. If you like, you can add in the name of a function you've defined on your Page. This will run instead of the default "alert" message when a Product is successfully added:


As in the example above, you can use this to add a different alert message with a different message.  Or you could run any other JavaScript you like instead.

Customising the Success Alert along with Live Cart Update

Remember, you also have access to the function: s_e_live_cart_update()which will return the number of Items now in the Cart. You could incorporate this number into the message.


Buy Now Button

Some eCommerce Sites require a "Buy Now" button which adds the Product to the Cart and then sends them directly into the Checkout Flow. You can turn your "Add to Cart" button into a "Buy Now" button using customisation options: