如何将字符串转换为JavaScript日期对象?
var st = "date in some format"
var dt = new Date();
var dt_st = // st in Date format, same as dt.
当前回答
如果你可以使用很棒的luxon库，你可以很容易地解析你的日期。
var luxonDate = DateTime.fromISO("2014-09-15T09:00:00");
和可以访问JS date对象通过
luxonDate().toJSDate();
旧的答案使用的是MomentJS
var momentDate = moment("2014-09-15 09:00:00");
momentDate ().toDate();
其他回答
转换为pt-BR格式:
var dateString = "13/10/2014";
var dataSplit = dateString.split('/');
var dateConverted;
if (dataSplit[2].split(" ").length > 1) {
var hora = dataSplit[2].split(" ")[1].split(':');
dataSplit[2] = dataSplit[2].split(" ")[0];
dateConverted = new Date(dataSplit[2], dataSplit[1]-1, dataSplit[0], hora[0], hora[1]);
} else {
dateConverted = new Date(dataSplit[2], dataSplit[1] - 1, dataSplit[0]);
}
我希望能帮助到别人!!
你可以试试这个:
function formatDate(userDOB) { const dob = new Date(userDOB); const monthNames = [ 'January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December' ]; const day = dob.getDate(); const monthIndex = dob.getMonth(); const year = dob.getFullYear(); // return day + ' ' + monthNames[monthIndex] + ' ' + year; return `${day} ${monthNames[monthIndex]} ${year}`; } console.log(formatDate('1982-08-10'));
将其作为参数传递给Date():
var st = "date in some format"
var dt = new Date(st);
您可以使用，例如:dt.getMonth()来访问日期、月、年。
还有一种方法是在格式字符串上构建一个带有命名捕获组的正则表达式，然后使用该正则表达式从日期字符串中提取日、月和年:
function parseDate(dateStr, format) { const regex = format.toLocaleLowerCase() .replace(/\bd+\b/, '(?<day>\\d+)') .replace(/\bm+\b/, '(?<month>\\d+)') .replace(/\by+\b/, '(?<year>\\d+)') const parts = new RegExp(regex).exec(dateStr) || {}; const { year, month, day } = parts.groups || {}; return parts.length === 4 ? new Date(year, month-1, day) : undefined; } const printDate = x => console.log(x ? x.toLocaleDateString() : x); printDate(parseDate('05/11/1896', 'dd/mm/YYYY')); printDate(parseDate('07-12-2000', 'dd-mm-yy')); printDate(parseDate('07:12:2000', 'dd:mm:yy')); printDate(parseDate('2017/6/3', 'yy/MM/dd')); printDate(parseDate('2017-6-15', 'y-m-d')); printDate(parseDate('2015 6 25', 'y m d')); printDate(parseDate('2015625', 'y m d')); // bad format
function stringToDate(_date,_format,_delimiter)
{
var formatLowerCase=_format.toLowerCase();
var formatItems=formatLowerCase.split(_delimiter);
var dateItems=_date.split(_delimiter);
var monthIndex=formatItems.indexOf("mm");
var dayIndex=formatItems.indexOf("dd");
var yearIndex=formatItems.indexOf("yyyy");
var month=parseInt(dateItems[monthIndex]);
month-=1;
var formatedDate = new Date(dateItems[yearIndex],month,dateItems[dayIndex]);
return formatedDate;
}
stringToDate("17/9/2014","dd/MM/yyyy","/");
stringToDate("9/17/2014","mm/dd/yyyy","/")
stringToDate("9-17-2014","mm-dd-yyyy","-")
