对数组使用排序时数组保持不变

Question

我想对天数数组进行排序，我发现使用预定义的数组引用比 JS Date 类方法更好。

调用排序的我的数组没有排序，即使我在回调中总是return 1，数组也永远不会改变。

const days = ["monday", "tuesday", "wednesday", "thursday", "friday", "saturday", "sunday"];

const toSort = ["monday", "tuesday", "thursday", "friday", "wednesday"];

toSort.sort((a, b) => {
  a = days.indexOf(a);
  b = days.indexOf(b);

  return a < b ? 0 : 1;

  // No matter what I return, the source array remains unchanged
  return a < b ? 1 : 0;
  return 1;
});

console.log(toSort);

使用基本的 JS 函数出现如此混乱的情况（哈哈明白了）一定意味着答案非常明显，但我无法弄清楚。

Answer 1

const days = ["monday", "tuesday", "wednesday", "thursday", "friday", "saturday", "sunday"];

const toSort = ["monday", "tuesday", "thursday", "friday", "wednesday"];

toSort.sort((a, b) => {
  a = days.indexOf(a);
  b = days.indexOf(b);

  return a < b ? -1 : 1;

  return a < b ? 1 : 1;
  return 0;
});

console.log(toSort);