Building Interactive Elements in a React UI
Interactive elements like buttons, toggles, and dropdowns are core to a React UI. Here is how to build them.
Building Interactive Elements in a React UI
Interactive elements like buttons, toggles, and dropdowns are core to a React UI. Here is how to build them well.
Buttons
Buttons trigger actions. Use the button element, handle onClick, and manage loading and disabled states. A loading button shows a spinner and prevents double clicks.
Toggles and Checkboxes
Toggles reflect a boolean state. Use a controlled input bound to state, and toggle the state on change. Show the current state clearly with the visual position.
Dropdowns
Dropdowns show a list of options. Manage open and close state, handle outside click to close, and keyboard navigation with up and down arrows for accessibility.
Modals
Modals overlay the UI. Render on a backdrop, handle escape and backdrop click to close, trap focus within the modal, and return focus to the trigger on close for accessibility.
Forms
Forms collect input. Use controlled inputs bound to state, validate on change or blur, manage loading during submit, and show clear errors. Prevent default on submit to avoid reloads.
Tabs
Tabs switch between views. Hold the active tab in state, render the active panel, and style the active tab differently. Add keyboard navigation for accessibility.
The Takeaway
Build interactive elements with controlled state, clear event handlers, loading and disabled states, and accessibility. Buttons, toggles, dropdowns, modals, forms, and tabs all follow the same pattern: state drives what is shown, and events update the state.
With controlled state, clear event handlers, loading and disabled states, and accessibility. Buttons, toggles, dropdowns, modals, forms, and tabs all follow the same pattern: state drives what is shown, and events update the state.
Manage open and close state, handle outside click to close, and add keyboard navigation with up and down arrows for accessibility. The list of options renders based on the open state, and selecting an option updates the selected value.
Render on a backdrop, handle escape and backdrop click to close, trap focus within the modal so Tab cycles inside, and return focus to the trigger element on close. This is essential for keyboard and screen reader users.
Use controlled inputs bound to state, validate on change or blur, manage loading during submit, show clear errors, and prevent default on submit to avoid reloads. Reset the form state after a successful submit for a clean next submission.
Hold the active tab index in state, render the active panel, style the active tab differently, and add keyboard navigation between tabs for accessibility. Clicking a tab updates the active index, which changes the rendered panel.
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