Day 5 tutorial demonstrated how to bind input fields and a checkbox to reactive states in different frameworks.In Vue 3, refs like newItem and newItemHighPriority were used to bind to an input field and checkbox respectively.In SvelteKit, $state runes like newItem and newItemHighPriority were bound to the text input and checkbox.In Angular 19, signals newItem and newItemHighPriority were bound to input fields using [(ngModel)].