HTML with JavaScript

this is one method on app.js

addItemToCart () { // hint: you can use `dataset` to access data attributes // See passing data from HTML to JavaScript from course note let cartItems = this.store.cartItems || []; // TODO: replace with actual item console.log(this.root.data); cartItems.push({ name: 'test' }); console.log(cartItems); this.store.cartItems = cartItems; }

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and it ask me to update with actual

my button on HTML is this

td>

so what should i change on js?