tem, i) => { const isSelected = this.state.selectedIndex == i; const itemClassList = ["autocomplete-item"]; if (isSelected) { itemClassList.push("autocomplete-selected"); } return dom.li( { key: i, "data-index": i, "data-value": item.value, className: itemClassList.join(" "), ref: isSelected ? "selected" : null, onMouseDown: this.onMouseDown, }, item.displayValue ); }) ) ) ); } } module.exports = SearchBoxAutocompletePopup; PK