我有编号的数组
var year = [1999,2000,2001,2002,2003];
我需要转换成datetime格式
var yearConvert =["1999-00-00","2000-00-00","2001-00-00","20002-00-00","2003-00-00"];
我只有一年是一个整数
您可以使用map和CONCAT -00-00
每个元素
var year = [1999,2000,2001,2002,2003];
let op = year.map(e => e+'-00-00')
console.log(op)
你可以使用一个IIFE generator function与spread syntax和yield
每个值到这样一个数组:
const year = [1999,2000,2001,2002,2003],
yearConvert = [...(function*(a){
for(y of a) yield `${y}-00-00`;
})(year)];
console.log(yearConvert);
您可以使用Array#map
做到这一点。但返回的数组将有值的字符串不是Date
对象。
const year = [1999,2000,2001,2002,2003];
const dateString = year.map((ele) => `${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);