hi guys, probably extremely newbie question but I've made all changes to the script including changing the button to button[data-qa=add-to-cart] but im unsure why it's not launching..
I'm using Australian website so changed the size preference to example 'US 9'.
I'm clicking run and using notepad++ but its just opening up a new tab in chrome with all the code. Have attached screenshots. how do I exactly run this code in notepad++?

hi guys, probably extremely newbie question but I've made all changes to the script including changing the button to button[data-qa=add-to-cart] but im unsure why it's not launching..
I'm using Australian website so changed the size preference to example 'US 9'.
I'm clicking run and using notepad++ but its just opening up a new tab in chrome with all the code. Have attached screenshots. how do I exactly run this code in notepad++?