在React Native中将嵌套的if/else转换为ternerary

condition ? exprIfTrue : exprIfFalse;

let result;
if (condition1) {
  if (condition2) {
    result = value1;
  } else {
    result = value2;
  }
} else {
  result = value3;
}

let result = condition1 ? (condition2 ? value1 : value2) : value3;

function getGreeting(isMorning, isWeekend) {
  if (isMorning) {
    if (isWeekend) {
      return "Good morning, weekend!";
    } else {
      return "Good morning, weekday!";
    }
  } else {
    return "Good day!";
  }
}

function getGreeting(isMorning, isWeekend) {
  return isMorning ? (isWeekend ? "Good morning, weekend!" : "Good morning, weekday!") : "Good day!";
}