在此 switch 语句中执行 `return '';` 或 `return null;` 是否更有意义?

Does it make more sense to do `return '';` or `return null;` from within this switch statement?

对于以下函数,default 子句中的 return ''return null 更有意义吗?

const getComputerChoice = () => {
  const randomNumber = Math.floor( Math.random() * 3 );

  let computerChoice;
  switch (randomNumber) {
    case 0:
      computerChoice = 'rock';
      break;
    case 1:
      computerChoice = 'paper';
      break;
    case 2:
      computerChoice = 'scissors';
      break;
    default:
      computerChoice = '';
  }

  return computerChoice; 
}    

const getComputerChoice = () => {
  const randomNumber = Math.floor( Math.random() * 3 );

  let computerChoice;
  switch (randomNumber) {
    case 0:
      computerChoice = 'rock';
      break;
    case 1:
      computerChoice = 'paper';
      break;
    case 2:
      computerChoice = 'scissors';
      break;
    default:
      computerChoice = null;
  }

  return computerChoice; 
}    

此外,即使在 default 子句中也包含 break 是否被认为是一个好习惯?

这什么时候需要 return 除了三者之一之外的任何东西?

如果JS引擎在Math中突然出现bug,你可能会想抛出一个错误。

否则只需使用始终为 0、1 或 2 的随机数到 index an array 3 个选项。请注意,当没有括号

时,不需要显式 return 语句

const getComputerChoice = () => ["rock", "paper", "scissors"][Math.floor(Math.random() * 3)];

console.log(getComputerChoice());
console.log(getComputerChoice());
console.log(getComputerChoice());
console.log(getComputerChoice());
console.log(getComputerChoice());
console.log(getComputerChoice());
console.log(getComputerChoice());
console.log(getComputerChoice());
console.log(getComputerChoice());
console.log(getComputerChoice());