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Create a search field: a 40px-tall rounded input inside a real form with role="search", type="search" on the input, enterkeyhint="search" for mobile keyboards, and a visible label or aria-label since a magnifier icon is not an accessible name. Put a 16px magnifier on the left with aria-hidden, and a clear button on the right that appears only once there is text, is a real button with an accessible label, and returns focus to the input after clearing. Enter submits the raw query through the form so search still works with JavaScript disabled. Escape clears the field when it has text. Show a focus-visible ring on the wrapper, not the bare input, so the icon and field read as one control.

Create a typeahead search bar using the ARIA combobox pattern: aria-expanded, aria-controls and aria-activedescendant on the input, role="listbox" on the panel, role="option" with a unique id on each row. DOM focus must stay in the text field at all times — move the visual highlight by updating aria-activedescendant, never by focusing an option, or typing breaks. Debounce queries at 250ms and cancel in-flight requests so a slow earlier response cannot overwrite a newer one. Arrow Down and Up move the active option and wrap at the ends, Home and End jump to the first and last, Enter selects the active option or submits the raw query when none is active, Escape closes the panel and restores the typed text, and Tab closes and moves on rather than walking the options.

Create a command-palette search overlay opened by cmd+K and ctrl+K: a centered dialog with a backdrop, using the native dialog element or role="dialog" with aria-modal="true". Trap focus inside it, place initial focus in the input, close on Escape and backdrop click, and return focus to the element that was focused before opening. Ignore the shortcut while the user is typing in another input or a contenteditable region. Inside, run the ARIA combobox pattern with aria-activedescendant, group results under headed sections such as Pages, Docs and Actions, and let Arrow Down and Up move across group boundaries while skipping the group headings. Show a visible cmd+K hint in the trigger and keyboard hints in the dialog footer.

Create a search bar that renders three distinct dropdown states rather than one panel that empties. On an empty query, show up to five recent searches from localStorage under a Recent heading, each with a small remove button and a Clear all action. While a request is in flight, keep the previous results visible and overlay three skeleton rows, and swap the magnifier for an inline spinner rather than blanking the panel. On zero matches, show a no-results row naming the query plus a "Search everything" fallback action that submits the raw text. Announce the outcome in an aria-live="polite" region — "8 results available" or "No results" — debounced so intermediate counts are not read out. Arrow keys, Enter and Escape behave identically in all three states.

Create a scoped search bar: removable scope chips render inside the input wrapper to the left of the text caret, each a button with an accessible label such as "Remove filter: Invoices". Pressing Backspace with an empty query removes the last chip rather than doing nothing, and typing a known prefix followed by a colon converts it into a chip. Keep the chips out of the input value itself and send them as separate query parameters. Below the field, render filter pills that are toggle buttons with aria-pressed, and re-run the debounced query on every change. Preserve the caret position when a chip is added, keep the ARIA combobox wiring for the suggestion listbox, and reflect the active scope in the aria-live result-count announcement.

Create a search bar with rich suggestion rows: each row is a role="option" containing a 40px thumbnail with explicit width and height attributes so the panel does not reflow as images load, a title with the matched substring bolded, and a secondary line with price or category. Because the row holds several elements, give each option an aria-label describing the whole row so a screen reader hears one coherent option rather than fragments. Cap the panel at 320px with internal scroll, and scroll the active option into view with block nearest as aria-activedescendant moves. Keep the last row a "See all results for <query>" action that submits the raw text. Highlight matches by wrapping the substring, never by injecting HTML from the response.