有没有一种方法可以将规则同时应用于函数的所有参数？ 让我们考虑一个具有5个参数的JavaScript函数。我想从所有参数中删除所有空格 const doTruncate = function (pre = "", firstName = "", middleName = "", lastName = "", post = "") { pre = pre.strim() firstName = firstName.trim() middleName = middleName.trim() lastName = lastName.trim() post = post.trim() let result = pre + " " + firstName + " " + middleName + " " + lastName + " " + post; return result.trim(); };

有没有更好的方法来执行此操作，而不是单独修剪每个参数？

我会使用rest参数，然后修剪数组中的每个参数：

const doTruncate = (...args) => {
  return args.slice(0, 5) // this slice can be removed if the function
         // is always called with 5 or less arguments
    .map(str => (str || '').trim()) // the `|| ''` is only needed 
           // if `undefined` may be explicitly passed
           // in the middle of the argument list
           // while later arguments are non-empty
    .join(' ')
    .trim(); // this last trim can be removed
             // if the first and last parameters, when passed, aren't empty
};