search-box input.search(placeholder="Search...", onkeydown="{_handleKeyDown}") script. let lastKnownQuery; Object.assign(this, { _handleKeyDown: (event) => { switch (event.code) { case "ArrowDown": this.trigger("selectionDown"); break; case "ArrowUp": this.trigger("selectionUp"); break; case "Enter": this.trigger("confirm"); break; case "Escape": this.trigger("cancel"); break; } let searchInput = this.root.querySelector(".search"); if (searchInput.value !== lastKnownQuery) { lastKnownQuery = searchInput.value; this.trigger("queryChanged", searchInput.value); } return true; } }) style(scoped, type="scss"). .search { border: 0px; padding: 17px 9px; font-size: 21px; background-color: transparent; width: 100%; color: white; font-weight: bold; &::-webkit-input-placeholder { color: #d99d9d; } }