使用 javascript 的代码片段中的三元运算符是什么意思？

Question

Hi i want to understand what the code below does with ternary operator. Right now it is hard to me to decode with ternary operator. could someone help me understand what this code does. thanks.

const handleSelection = React.useMemo(
    () =>
        page.map(row => {
            return singleSelect
                ? toggleSingleSelection
                    ? () => toggleSingleSelection(row)
                    : undefined
                : toggleSelection
                ? () => toggleSelection(row)
                : undefined;
            }),
      [toggleSelection]
  );

Answer 1

page.map(row => {
  if(singleSelect && toggleSingleSelection) {
       return () => toggleSingleSelection(row)
  } else if(!singleSelect && toggleSelection) {
       return () => toggleSelection(row)
  }
})