即使满足条件，Array.some() 也始终为假

Question

我正在尝试编写一个函数，该函数获取表示日期的字符串数组，然后检查给定日期是否在数组中。但是，即使满足条件，我也总是会false。

下面是一个最小的代码：

let dates = ['2020-06-29', '2020-07-13'];
dates = dates.map(some_day => new Date(some_day));
const someDay = new Date(2020, 5, 29);
console.log(dates.some(some_day => some_day.getTime() === someDay.getTime()));

编辑1：(仍然不起作用，但我正在改进代码(

let dates = ['2020-06-29', '2020-07-13'];
dates = dates.map(some_day => new Date(some_day));
let someDay = new Date(2020, 5, 29);
const date_string = `${someDay.getFullYear()}-${someDay.getMonth() + 1}-${someDay.getDate()}`;
someDay = new Date(date_string);
console.log(dates.some(some_day => some_day.getTime() === someDay.getTime()));

Answer 1

由于时区差异，请操作时区偏移量，或者：

dates.some(some_day => 
(
(some_day.getFullYear() === someDay.getFullYear()) &&
(some_day.getMonth() === someDay.getMonth()) &&
(some_day.getDate() === someDay.getDate())
)
)