JavaScript:数字数组，以日期时间字符串格式表示 [英] JavaScript: Array of numbers to date-time string format

问题描述

我有一个数字数组

var year = [1999,2000,2001,2002,2003];

我需要转换为日期时间形式

and I need to convert to date-time formar

var yearConvert =["1999-00-00","2000-00-00","2001-00-00","20002-00-00","2003-00-00"];

我只有整数年份

推荐答案

您可以使用

You can use Array#map to do it. But the returned array will have the values as string not as Date object.

const year = [1999,2000,2001,2002,2003];
const dateString = year.map((ele) => `${ele}-00-00`);
console.log(dateString);

//Convert this array to Date Objects using Date constructor Date(year, monthIndex, day) month starts from '0'

const date = dateString.map((str) => { 
  const data = str.split('-');
  return new Date(data[0], data[1], data[2]+1);
});

console.log(date)

//To verify parse to date strings

const dateParsed = date.map((date) => date.toDateString());
console.log(dateParsed);

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