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Kade Rathbun5,902 Points
Display an error message when there are no more list elements to remove?
I was wondering a basic way to display an error message once all task items are removed from the list? I see the console throws an error once all items are removed, so how could display an alert for example? Thanks :)
Steven Parker216,810 Points
When there are no more items, the querySelector returns null, and attempting to perform the remove on that causes the error. You can easily test the value from querySelector and either remove it or issue a message:
const lastItem = document.querySelector("li:last-child"); if (lastItem) lastItem.remove(); // it's not null, so remove it else alert("No more items!"); // otherwise alert